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As you can see in the title, i decided to write a small fastboot tut, especially for our p880 and its "own" commands and tricks
I am, as always, not responsible for what you do with your device. Do it on your own risk.
I will however not explain on how to set up fastboot on your PC. There are tons of tuts out there on xda, just search for it
NOTICE: You need an unlocked bootloader for this
Screenshots will be added later, 'cause my lappy is compiling right now and i thought i could use the time to write this so just wait a bit
Now, lets begin with the fun, shall we?
General
Fastboot is usually quite easy to use. But if you went searching for a tut on the web, you might have noticed that it doesn't work the way it should on your device.
That's because LG messed something up in the bootloader, but let's don't worry about that now, it does work nontheless
Fastboot is "a part" of the bootloader. This means, neither the kernel (boot), nor the recovery gets booted.
That gives you the ability to flash, but also boot kernels/recoveries. And yes, i meant booting, without really flashing it
Now we need to get into fastboot mode:
And this is (one of) the point(s) where LG messed up. The usual command is "adb reboot bootloader". But this command does not work on your device the way it should.
It gets you into a kind of fastboot mode, but you can't flash anything, because it says the bootloader would be locked, even tho it isn't.
The working command is
Code:
adb reboot oem-unlock
i guess this command sounds familliar, doesn't it? and don't worry, it will not lead you to a menu that deletes your data.
It will lead you to the working fastboot mode
now we're in the working fastboot mode. To check if you've set up fastboot correctly, type
Code:
fastboot devices
this should list your phone and its serial number.
It is recognized? good. so now we might want to check the status of our device (BL unlock state, serial number,...).
Therefore type
Code:
fastboot getvar all
now you can check whether it's really unlocked or not.
If everything's fine, you might want to...
Flash something
In order to flash something, you need the appropriate image. For kernels it's mostly "boot.img"
The command to flash something via fastboot is in general
Code:
fastboot flash <partition> <filename>
Example: You want to flash a kernel (named test_boot.img) and you have downloaded the kernel to the folder where your fastboot.exe is.
So you type
Code:
fastboot flash boot test_boot.img
This will copy the kernel to your device and then flash it to the LNX (boot) partition.
Of course you can flash other partitions, too, like system, data, cache, recovery...
After a flash, it is wise to clear the cache, or even your /data partition...
Deleting a partition
You don't need a recovery to wipe a partition, just use fastboot
The general command is
Code:
fastboot erase <partition>
For our example it's enough to wipe the cache. You can do this using this command:
Code:
fastboot erase cache
Also here you can wipe all partitions, like system, data, cache, boot, recovery...
So now we've flashed what we wanted to, wiped the needed partitions, but how do i..
Get out of fastboot
This is as easy as getting in just type
Code:
fastboot reboot
to reboot the device (Here's another thing, where LG messed up.... it reboots, but stays at the LG spash screen.
So press the power button for at least 10 secs. Now your device will reboot into recovery (!?)
then just tap reboot system now and be happy )
or
Code:
fastboot continue
this one will not reboot the device, but continue the boot procedure. I, for one, would suggest you to use the first command
now your device will boot up normally (except your kernel/system.... has a bug of course )
for more help, just type
Code:
fastboot help
and the last point is...
Bricking the device
nah, just kidding
Reserved
Thanks for this usefull post!
Sent from my LG-P880 using xda app-developers app
thanks, it's very useful for me.:good:
Thanks,
it's so easy
fastboot boot <kernel> <ramdisk> -c "androidboot.mode=normal"
Click to expand...
Click to collapse
<kernel> is the kernel zImage
<ramdisk> can be a .img, .cpio, .cpio.gz
-c "androidboot.mode=normal” is needed the get the kernel booted for the p880 with the correct commandline
Gesendet von meinem LG-P880 mit Tapatalk 4 Beta
So, to get into fastboot mode, I have to turn on my phone, plug it to my computer and in cmd I type adb reboot oem-unlock, right? Is there any possibility to access it in case of a bootloop or something?
boot into recovery system by holding power+vol-down till it vibrates, then use either adb to issue the command or when using twrp as recovery system: Reboot --> Fastboot
Gesendet von meinem LG-P880 mit Tapatalk 4 Beta
A little update from LG...
I wrote them that they have messed up our bootloader, and told them the bugs/problems/... well, see yourself:
1) "adb reboot bootloader" doesn't bring me into bootloader. Well it does, but even though i have unlocked the bootloader, it still says it would be locked.
instead i need to use "adb reboot oem-unlock" to get into bootloader.
- P880 does not support "adb reboot bootloader" to go into bootloader. P880 only works "adb reboot oem-unlock" instead of "adb reboot bootloader" to go into bootloader. and then you can use the fastboot command mode after accept unlock bootloader.
2) "fastboot reboot" partly reboots the device, but then it keeps stuck at the first LG splash screen. pressing power button for 10 seconds brings me into recovery then, instead of into the ROM.
- P880 supports "fastboot reboot", before flashing the customize image, "fastboot reboot" reboot normally.
3) "fastboot flash system [path/to/system.img]" gives me "fatal error: unknown partition"
- P880 can only flash boot, recovery. Ex> fastboot flash boot/recovery boot.img/recovery.img
4) "fastboot boot [...]" doesn't work at all.
- P880 does not support "fastboot boot [...]" command
- P880 supports only flash, erase, reboot as you already seen in bootloader unlock warning message.
5) I have found no way to boot into fastboot/bootloader without a booting phone. Maybe you could try to add the possibility to boot directly into fastboot.
- You can only go into fastboot mode using "adb reboot oem-unlock"
Click to expand...
Click to collapse
lg is retarded, but hey atleast they had the decency to answer
Yeh, you need to kdz flash if you mess up both system and recovery.
Keep an suid busybox in /data so you can root and re-flash CWM/TWRP in the backup+restore mode without having to clear data so the stock ROM can boot.
Can't seem to get his wokring properly, think it's the drivers.
I connect my phone to the pc, run cmd and I reboot it to to the bootloader. From there, I can't do anything. I i Write "fastboot devices" I get nothing, can't flash anything either. Have tried the official drivers from lg, but it doesn't work.
That's the same way of using fastboot like it is on Sony devices, you should mention it so more people would use this guide.
The only difference is that on sony devices if you want to unlock your bootloader you need to get the key from this site and then fastboot 0x0fce oem unlock 0xKEY
hi dudes , if phone (4x hd) is in s/w update mode , can I use fastboot command?
ppl, i beg for help:
when I use adb reboot oem-unlock or adb reboot bootloader, my phone only resets itself and boots back into normal working mode. I've tried to boot it into bootloader with holding volume up and power button and it boots into some kind of mode wheres only picture with symbols of mobile with symbols of data cable and power cable being plugged into phone with red symbol over cables that they shouldn't be unplugged. I've also tried eboot oem-unlock and reboot bootloader commands in that mode and it only resets the phone back into normal working mode while command fastboot flash recovery twrp.img only gave me "waiting for the device" and nothing happening...
also I've entered into hidden menu with 3845#*880# command bit there's no "BL status" or "Bootloader Unlock Check" or anything that has any connection to Bootloader
help?
@gesaugen: Works only with firmware 20A and higher.
GoodSoul said:
@gesaugen: Works only with firmware 20A and higher.
Click to expand...
Click to collapse
GoodSoul, thanks for info!
So I only need to upgrade firmware and it should work then...
I tried this method and for fastboot devices
i get no permissions fastboot
pls help
edit: i just did it with sudo fastboot devices
but i have another error:
fastboot flash zimage zImage
sending 'zimage' (4913 KB)...
OKAY [ 1.216s]
writing 'zimage'...
FAILED (remote: Invalid Partition Name.)
InterrtuptoR said:
but i have another error:
fastboot flash zimage zImage
sending 'zimage' (4913 KB)...
OKAY [ 1.216s]
writing 'zimage'...
FAILED (remote: Invalid Partition Name.)
Click to expand...
Click to collapse
Only "boot" and "recovery" are supported for fastboot flash command. Boot is the kernel and takes boot.img. Unfortunately, "system" is not supported, otherwise developing on this phone would have been similar to Nexus devices.
Hello guys,
Today when I tried to plug my headphones to listen to music, I noticed that the pone hardly recognises them. First I thought it was problem of the headphones but I tried to plug another and I almost must keep my finger pressing the cable where is plugged
So I think is problem of the headphone jack.
I have the bootloader unlocked so the warranty is void. I want to know if there is any method to lock it again to re valid the warranty
Sent from my XT890 using xda premium
Aljecama12 said:
Hello guys,
Today when I tried to plug my headphones to listen to music, I noticed that the pone hardly recognises them. First I thought it was problem of the headphones but I tried to plug another and I almost must keep my finger pressing the cable where is plugged
So I think is problem of the headphone jack.
I have the bootloader unlocked so the warranty is void. I want to know if there is any method to lock it again to re valid the warranty
Sent from my XT890 using xda premium
Click to expand...
Click to collapse
It´s hard because when you did the Bootloader Unlock procedure on Motorola website you gave to them your IMEI, so theorically if you send the phone to repair it will be rejected.
But I don´t. Here on Brazil a lot of users had general problems with Razr i, sended the phone with BL unlocked to the technical support and got a new one... So I don´t know, it deppends of how stuff works with Motorola in your country..
The command "fastboot oem lock", or something else, doesn´t work as other phones. So the bootloader is not lockable again via PC...
WendelSchelhan said:
It´s hard because when you did the Bootloader Unlock procedure on Motorola website you gave to them your IMEI, so theorically if you send the phone to repair it will be rejected.
But I don´t. Here on Brazil a lot of users had general problems with Razr i, sended the phone with BL unlocked to the technical support and got a new one... So I don´t know, it deppends of how stuff works with Motorola in your country..
The command "fastboot oem lock", or something else, doesn´t work as other phones. So the bootloader is not lockable again via PC...
Click to expand...
Click to collapse
the command fastboot oem lock works, but two things:
The warranty is still void, because you require the code in the motorola website
The BL still show the "WARNING BOOTLOADER UNLOCKED" message
So if you want to lock the bootloader and don't want the "WARNING BOOTLOADER (...)" message follow this commands, This will delete your /data & /cache partition, and you need flash motorola signed files (firmware):
cd (firmware folder)
fastboot oem lock begin
fastboot flash boot boot_signed
fastboot flash bos bos_signed
fastboot flash cdrom cdrom_signed
fastboot flash gpt gpt_signed
fastboot flash motoboot motoboot
fastboot flash radio radio_signed
fastboot flash recovery recovery_signed
fastboot flash system system_signed
fastboot flash ulogo ulogo_signed
fastboot erase userdata
fastboot erase cache
fastboot oem lock
the first command will start the lock and wait for signed partitions, all the fastboot flash (...) commands will flash ALL the partitions signed's; the fastboot flash ulogo_logo will remove the "WARNING BOOTLOADER UNLOCKED" message; "fastboot erase (...)" will wipe the data partitions (required); Fastboot oem lock finalizes the bootloader lock process
Boss442 said:
the command fastboot oem lock works, but two things:
The warranty is still void, because you require the code in the motorola website
The BL still show the "WARNING BOOTLOADER UNLOCKED" message
So if you want to lock the bootloader and don't want the "WARNING BOOTLOADER (...)" message follow this commands, This will delete your /data & /cache partition, and you need flash motorola signed files (firmware):
cd (firmware folder)
fastboot oem lock begin
fastboot flash boot boot_signed
fastboot flash bos bos_signed
fastboot flash cdrom cdrom_signed
fastboot flash gpt gpt_signed
fastboot flash motoboot motoboot
fastboot flash radio radio_signed
fastboot flash recovery recovery_signed
fastboot flash system system_signed
fastboot flash ulogo ulogo_signed
fastboot erase userdata
fastboot erase cache
fastboot oem lock
the first command will start the lock and wait for signed partitions, all the fastboot flash (...) commands will flash ALL the partitions signed's; the fastboot flash ulogo_logo will remove the "WARNING BOOTLOADER UNLOCKED" message; "fastboot erase (...)" will wipe the data partitions (required); Fastboot oem lock finalizes the bootloader lock process
Click to expand...
Click to collapse
I didn´t knew about this. Stills impossible to remove WARNING BOOTLOADER UNLOCKED message on unlocked devices using this "fastboot flash ulogo ulogo_signed" command?
WendelSchelhan said:
I didn´t knew about this. Stills impossible to remove WARNING BOOTLOADER UNLOCKED message on unlocked devices using this "fastboot flash ulogo ulogo_signed" command?
Click to expand...
Click to collapse
No, Only fastboot flash ulogo logo_signed.
If you flash ulogo file still show warning bl unlocked, but if you do in fastboot "fastboot oem lock" they said: [FAIL] Already locked :silly: maybe motorola don't want the users relock the bootloader
Is our phone water resistant? Not submersions Because I had a problem when it was raining is that the problem? Does Motorola warranty covers this?
Sent from my XT890 using xda premium
Would do the same procedure on the Motorola Razr HD? In firmware does not have the files "bos_signed, gpt_signed, motoboot and radio_signed" if any can help, I really need. Grateful.
Hello,
I have the following problem. I unlocked the bootloader with the MI Unlocker after I waitedf freaking 360h.
I then tried to flash Xiamoi EU Rom - something didn't work as expected and I tried to flash the offical rom from miui com.
During the fastboot flash the phone stuck and screen go black. I tried to power off and power on but it doesn't react to anything
Fastboot shows the device as ????????..if I try a fastboot reboot FAILED (Write to device failed (Unknown error)).
Any ideas what I can do to fix this?
Well, explain the steps you did please.
Skickat från min MI 9 via Tapatalk
As I wrote I first unlocked the bootloader
Installed TWRP and flashed the EU ROM from xiamoi.eu.
Since Google Pay wasn't working on this one either I wanted to return to the global image EEA.
So I downloaded the offical tgz with the flash_all.bat in fastboot mode..
It started but stuck at the elf file..screen went black and since that the fastboot only shows ????????
I tried holding power for 10, 15,30.up to 2min..it didn't turn of the LED is blinking when hitting the power button.
Thats all
ioglnx said:
As I wrote I first unlocked the bootloader
Installed TWRP and flashed the EU ROM from xiamoi.eu.
Since Google Pay wasn't working on this one either I wanted to return to the global image EEA.
So I downloaded the offical tgz with the flash_all.bat in fastboot mode..
It started but stuck at the elf file..screen went black and since that the fastboot only shows ????????
I tried holding power for 10, 15,30.up to 2min..it didn't turn of the LED is blinking when hitting the power button.
Thats all
Click to expand...
Click to collapse
its looked like you beeing soft bricked...try installing miflash and boot into fastboot and plug it in see if miflash can detect your device...
fatalynx05 said:
its looked like you beeing soft bricked...try installing miflash and boot into fastboot and plug it in see if miflash can detect your device...
Click to expand...
Click to collapse
As written it won't turn off..it is not responding to power button - only LED is blinking when I press it or keep it pressed..think this crappy phone died.
Just to be sure... Did you press volume down + power?
ioglnx said:
Hello,
I have the following problem. I unlocked the bootloader with the MI Unlocker after I waitedf freaking 360h.
I then tried to flash Xiamoi EU Rom - something didn't work as expected and I tried to flash the offical rom from miui com.
During the fastboot flash the phone stuck and screen go black. I tried to power off and power on but it doesn't react to anything
Fastboot shows the device as ????????..if I try a fastboot reboot FAILED (Write to device failed (Unknown error)).
Any ideas what I can do to fix this?
Click to expand...
Click to collapse
Download FASTBOOT ROM from the official site and unzip it.
After charging the phone for a while, press and hold the Power button and Volume +-button for a few seconds.
If FAST BOOT starts, flash the unzip FAST BOOT ROM with the following command:
Some of the commands may end in an error, but ignore it and proceed to the end.
Try it. Wish good luck.
fastboot flash system system.img
fastboot flash boot boot.img
fastboot flash recovery recovery.img
fastboot flash cache cache.img
fastboot flash cust cust.img
fastboot flash dtbo dtbo.img
fastboot flash dummy dummy.img
fastboot flash logo logo.img
fastboot flash metadata metadata.img
fastboot flash misc misc.img
fastboot flash persist persist.img
fastboot flash vbmeta vbmeta.img
fastboot flash vendor vendor.img
fastboot erase userdata
fastboot flash userdata userdata.img
fastboot reboot
Thanks for the suggestion but you may overerad the one important point..I tried already ...
it doesn't responds to power button press in any way except the LED is BLINKING at that moment i press it.
I have tried Power + Volume+ and - nothing really nothing happens..the battery is fully charged.
Well I return it and fill RMA.
Kaeru Sapporo said:
Download FASTBOOT ROM from the official site and unzip it.
After charging the phone for a while, press and hold the Power button and Volume +-button for a few seconds.
If FAST BOOT starts, flash the unzip FAST BOOT ROM with the following command:
Some of the commands may end in an error, but ignore it and proceed to the end.
Try it. Wish good luck.
fastboot flash system system.img
fastboot flash boot boot.img
fastboot flash recovery recovery.img
fastboot flash cache cache.img
fastboot flash cust cust.img
fastboot flash dtbo dtbo.img
fastboot flash dummy dummy.img
fastboot flash logo logo.img
fastboot flash metadata metadata.img
fastboot flash misc misc.img
fastboot flash persist persist.img
fastboot flash vbmeta vbmeta.img
fastboot flash vendor vendor.img
fastboot erase userdata
fastboot flash userdata userdata.img
fastboot reboot
Click to expand...
Click to collapse
i was trying to install twrp in my rog 2 but while installing twrp from fastboot and adb i got stuck in fastboot mode and cannot boot into main OS PLEASE HELP ME
Check current slot and then switch to other slot and boot.
First try
fastboot devices (make sure your device is listed)
if it boots to fastboot again
fastboot getvar current-slot
fastboot --set-active=a or fastboot --set-active=b
fastboot reboot
rabunz1105 said:
Check current slot and then switch to other slot and boot.
First try
fastboot devices (make sure your device is listed)
if it boots to fastboot again
fastboot getvar current-slot
fastboot --set-active=a or fastboot --set-active=b
fastboot reboot
Click to expand...
Click to collapse
Have the same problem. Did all that you say but keeps restarting.
ED_STUFF said:
Have the same problem. Did all that you say but keeps restarting.
Click to expand...
Click to collapse
I had this problem, and I had to download the RAW firmware files and run the "flashall.bat" file through fastboot.
ED_STUFF said:
Have the same problem. Did all that you say but keeps restarting.
Click to expand...
Click to collapse
Did you manage to solve this issue? I have the same problem.
rabunz1105 said:
Check current slot and then switch to other slot and boot.
First try
fastboot devices (make sure your device is listed)
if it boots to fastboot again
fastboot getvar current-slot
fastboot --set-active=a or fastboot --set-active=b
fastboot reboot
Click to expand...
Click to collapse
I was in csc fastboot mode then i mistakenly did some fastboot adb commands from github rog phone 2(am having rog 3, works same) try those and you will get into fast boot mode from csc fastboot mode after than try above for any query contaact me on my mail [email protected]
Thanks xda love you
rabunz1105 said:
Check current slot and then switch to other slot and boot.
First try
fastboot devices (make sure your device is listed)
if it boots to fastboot again
fastboot getvar current-slot
fastboot --set-active=a or fastboot --set-active=b
fastboot reboot
Click to expand...
Click to collapse
Flash fastboot Raw firmware
My phone is stuck in a bootloop. Original firmware, rom, everything, not rooted, bootloader locked. It just restarted by itself randomly and has been stuck in a bootloop ever since. I've flashed raw firmware but it didn't help. Help please
shinnsan said:
My phone is stuck in a bootloop. Original firmware, rom, everything, not rooted, bootloader locked. It just restarted by itself randomly and has been stuck in a bootloop ever since. I've flashed raw firmware but it didn't help. Help please
Click to expand...
Click to collapse
Have you fixed your issue? if not, have you tried flashing both slots, _a and _b, using the same raw rom? use fastboot cmd's to set either slot_a or slot_b to active so you know you're flashing each slot
Hi guys, im posting this hoping theres a solution for my problem. I was folowing this guide to try install the stock firmware on this device and remove a virus that i wasnt able to remove even after cleaning the user data partiton (it was an anoying bar that started every time the phone booted). Well everything went acording to plan until i send a reboot command trough adb before flashing anything. Now the phone wont turn on and my computer doesnt detect it, doesnt show anything on screen and the computer plays the pluged and unplugged hardware sound constantly.
Moto E4 Guide To Full Stock Firmware Restore and Re-lock Bootloader Any Variant
Note : Do not erase/flash Bootloader file preloader.img or preloader.binfastboot erase preloader fastboot flash preloader preloader.img Do not erase/flash partition table file pgpt.img/gpt.img or pgpt.bin/gpt.binfastboot erase pgpt or gpt...
forum.xda-developers.com
fastboot erase boot
fastboot erase efuse
fastboot erase expdb
fastboot erase flashinfo
fastboot erase frp
fastboot erase hw
fastboot erase keystore
fastboot erase lk
fastboot erase logo
fastboot erase metadata
fastboot erase nvdata
fastboot erase nvram
fastboot erase oem
fastboot erase oemkeystore
fastboot erase otp
fastboot erase para
fastboot erase persist
fastboot erase proinfo
fastboot erase protect1
fastboot erase protect2
fastboot erase recovery
fastboot erase seccfg
fastboot erase secro
fastboot erase tee1
fastboot erase tee2
fastboot erase utags
fastboot erase system
fastboot erase userdata
Click to expand...
Click to collapse
I ran all of the above, searching on the forums i find some people that could get the phones back into adb using an sd card but the image files dont match my model number. Is there any way the phone can be recovered?.
R3ISEN said:
Hi guys, im posting this hoping theres a solution for my problem. I was folowing this guide to try install the stock firmware on this device and remove a virus that i wasnt able to remove even after cleaning the user data partiton (it was an anoying bar that started every time the phone booted). Well everything went acording to plan until i send a reboot command trough adb before flashing anything. Now the phone wont turn on and my computer doesnt detect it, doesnt show anything on screen and the computer plays the pluged and unplugged hardware sound constantly.
Click to expand...
Click to collapse
If you PC is making that sound, it is connecting, it may be in some kind of bootloop.
try using wall charger for a few hours.
Moto E4 Guide To Full Stock Firmware Restore and Re-lock Bootloader Any Variant
Note : Do not erase/flash Bootloader file preloader.img or preloader.binfastboot erase preloader fastboot flash preloader preloader.img Do not erase/flash partition table file pgpt.img/gpt.img or pgpt.bin/gpt.binfastboot erase pgpt or gpt...
forum.xda-developers.com
I ran all of the above, searching on the forums i find some people that could get the phones back into adb using an sd card but the image files dont match my model number. Is there any way the phone can be recovered?.
Click to expand...
Click to collapse
Not unless it's in EDL mode, PC will show it as a Qualcomm device.
sd_shadow said:
If you PC is making that sound, it is connecting, it may be in some kind of bootloop.
try using wall charger for a few hours.
Not unless it's in EDL mode, PC will show it as a Qualcomm device.
Click to expand...
Click to collapse
Thanks ill try pluggin it to the wall for a few hours, i will post back with the updates
Well i left it overnight to charge and now ive got the same unplugged and plugged hardware sound on windows but the device manager shows up a "MT65xx preloader" that pops in and out from the list.
Do you think there is good sign?
R3ISEN said:
Well i left it overnight to charge and now ive got the same unplugged and plugged hardware sound on windows but the device manager shows up a "MT65xx preloader" that pops in and out from the list.
Do you think there is good sign?
Click to expand...
Click to collapse
Yes, the MT65xx preloader means you have a MediaTek processor.
The XT1772 MediaTek version is codename is nicklaus.
Try this Flashtool
https://mirrors-obs-2.lolinet.com/firmware/motorola/2016/nicklaus/flashtool/
sd_shadow said:
Yes, the MT65xx preloader means you have a MediaTek processor.
The XT1772 MediaTek version is codename is nicklaus.
Try this Flashtool
https://mirrors-obs-2.lolinet.com/firmware/motorola/2016/nicklaus/flashtool/
Click to expand...
Click to collapse
I dont have the MediaTek DA USB VCOM driver installed, so at the moment it only shows up a unknown device. Could you help my find the correct driver? Also, if i manage to get the tool to flash the phone do i have to untick any component from the list? (like preloader) or i jus select everything?
Thank you in advance
Hey good news i finally was able to resucitate the phone! i found the drivers searching for the device id shown in device manager. I used the latest sp flash tool with my oem rom with all the firmware modules selected and got it working!. Now im trying to relock the bootloader to completly restore it to factory defaults.