How To Guide Flash/Test GSIs without wiping system - Samsung Galaxy Tab A8 (2021)

I've been using DSU Sideloader on my main device for a while. The main advantage is being able to flash and test GSIs without having to wipe partitions. You can simply switch back to your main system after rebooting.
It's very time consuming to test out GSIs for the SM-X200 with the state of TWRP where you cannot make backups and restore. So this is a second method that can be used that will save loads of time and frustration.
A few notes:
Lineage OS must be installed. It's not compatible with stock OneUI, at least for this device.
Install the system module through Magisk if you are having trouble with the APK version.
If you don't have much internal storage left, you can select a external SD card if you have one. Also transfer GSI img files over to there as well.
https://github.com/VegaBobo/DSU-Sideloader

Related

Copy Setup from OnePlus3T to OnePlus3T with CM13 (SULTAN)

So, I have two OnePlus3Ts. One is 64GB and one is 128GB; I want to transfer everything from the 64 to the 128 and basically just have it run the same without having to do all the restores, settings, etc. It will take a long time with amplify, greenify, my widgets, etc. I have a complex setup. Any advice?
Flash the same recovery on the second phone and install the same rom. Then restore /data from the old to the new withour md5. Optional copy the files on the internal sdcard over before first boot in new rom
Or try from a backup. Have twrp on new phone and copy backup to yr twrp backup folder. Hit restore.

How to decrypt 7.1.2

Hello, I'm currently using Dirty Unicorns October build.
I want to try some Oreo ROMs, but thing is they do not work well with encrypted devices.
So, I wanna ask how do I decrypt my phone?
The guides that I have seen are very old (for Lollipop). Are these guides still applicable to 7.1.2?
Yes, the guides are still applicable. However, it also depends upon the ROM. None of the Android 8.x ROMs I tried had any issues with encrypted storage.
Backup your internal storage to another device. Using TWRP wipe everything including internal storage and format data. Install ROM that does not force encryption. Copy your data back.
This is correct as far as it goes. What is simply required is a kernel that did not force encryption, not really a full ROM. If you wipe user data before install a "no force encrypt" kernel and then reboot, the user data partition will be encrypted again. You really should flash the kernel (or ROM with a kernel that doesn't force encrypt) first, then format user data. Of course backing up every thing on the user data partition (internal storage) should be done 1st.

Xiaomi Mi A2 (jasmine) can I update stock ROM via TWRP

Good Morning, I want to upgrade brother device to new version of android (because he can`t install security updates for unknow reasons), but I affraid that he loose all apps and settings (he is a firefighter and have app from firefighter station which signals dangerous traffic etc.) So my question is can I update downloaded stock ROM via TWRP (adb sideload) without fears that he loose everything?
iHusky said:
Good Morning, I want to upgrade brother device to new version of android (because he can`t install security updates for unknow reasons), but I affraid that he loose all apps and settings (he is a firefighter and have app from firefighter station which signals dangerous traffic etc.) So my question is can I update downloaded stock ROM via TWRP (adb sideload) without fears that he loose everything?
Click to expand...
Click to collapse
The only thing that will take your fear, is a backup of all important partitions (boot, system, data, vendor, efs, persist), stored externally, plus a copy of the internal storage content, also stored externally.
With that you should be able to restore everything to the exact point it is at right now, so you'll really need to mess up hard to not come out of basically any situation with those partitions saved.
As for your inital question:
Why don't you just update via ota if you wanna stay on stock?
Phil_Smith said:
The only thing that will take your fear, is a backup of all important partitions (boot, system, data, vendor, efs, persist), stored externally, plus a copy of the internal storage content, also stored externally.
With that you should be able to restore everything to the exact point it is at right now, so you'll really need to mess up hard to not come out of basically any situation with those partitions saved.
As for your inital question:
Why don't you just update via ota if you wanna stay on stock?
Click to expand...
Click to collapse
Because, brother have error, while try install security updates, but he have from March this year
And this is not possible to make update, because after click backup (Data partition) I get error "cannot create data/media/0/TWRP
iHusky said:
Because, brother have error, while try install security updates, but he have from March this year
And this is not possible to make update, because after click backup (Data partition) I get error "cannot create data/media/0/TWRP
Click to expand...
Click to collapse
Okay, so maybe first copying internal storage content to your PC and backup important apps would be sufficient then.
For apps you can use Titanium Backup (good, but makes troubles on android 10 at the moment), Swift Backup (recommend by many others) and more.
These backup solutions save apps and app data on your phone, so copy that to an external place, or you might lose them if you need to format data (which I'll suggest).
After your "backups" are made, I would wipe every partition in each slot, which you can also achieve with a "fastboot -w", and then also format data - the one where you need to type "yes" (which will also erase all internal storage content, but most probably will also solve your troubles).
From here there are tools like miflash or fastboot images to reflash stock (inform yourself about them, before you start all that!).
Be sure to flash the latest one right away, so you won't be in the need of "dirty" updates immediately again.
Afterwards, you can copy back the internal storage content and the folder of the backup app, and restore the previously saved apps.
Phil_Smith said:
Okay, so maybe first copying internal storage content to your PC and backup important apps would be sufficient then.
For apps you can use Titanium Backup (good, but makes troubles on android 10 at the moment), Swift Backup (recommend by many others) and more.
These backup solutions save apps and app data on your phone, so copy that to an external place, or you might lose them if you need to format data (which I'll suggest).
After your "backups" are made, I would wipe every partition in each slot, which you can also achieve with a "fastboot -w", and then also format data - the one where you need to type "yes" (which will also erase all internal storage content, but most probably will also solve your troubles).
From here there are tools like miflash or fastboot images to reflash stock (inform yourself about them, before you start all that!).
Be sure to flash the latest one right away, so you won't be in the need of "dirty" updates immediately again.
Afterwards, you can copy back the internal storage content and the folder of the backup app, and restore the previously saved apps.
Click to expand...
Click to collapse
I tried MiFlash, but without wipe anything, and it don`t upgrade version of system
But if I must, flash 2 slots A/B using MiFlash or one slot (A) is for system?
You can just download the zip file with version u want from the site below and flash it via TWRP making cache and dalvik cache wipes and changing slots at the end.
https://mifirm.net/model/jasmine.ttt#zip-mif
pfss said:
You can just download the zip file with version u want from the site below and flash it via TWRP making cache and dalvik cache wipes and changing slots at the end.
https://mifirm.net/model/jasmine.ttt#zip-mif
Click to expand...
Click to collapse
So, I don't need
to flash second slot?
iHusky said:
So, I don't need
to flash second slot?
Click to expand...
Click to collapse
Just if u want. It's not necessary.
In october I updated mine this way but forgot to change the slot before rebooting to the system and realized that was in the old Android version. I just went to TWRP again and changed slot. After rebooting, the phone was in the updated Android One.
pfss said:
Just if u want. It's not necessary.
In october I updated mine this way but forgot to change the slot before rebooting to the system and realized that was in the old Android version. I just went to TWRP again and changed slot. After rebooting, the phone was in the updated Android One.
Click to expand...
Click to collapse
I tried using fastboot and MiFlash but after all it stuck on bootloader
iHusky said:
I tried using fastboot and MiFlash but after all it stuck on bootloader
Click to expand...
Click to collapse
I just updated mine to November patch downloaded from here: https://mifirm.net/downloadzip/4197
I entered fastboot mode, executed
Code:
fastboot boot my_twrp_image_file.img
In TWRP made de wipes, flashed the ROM, changed slot and rebooted phone. It looks like it's normal.

How to prevent data/internal storage encryption after ROM switch?

Yesterday i flashed xiome eu stable ROM from weekly beta but couldn't boot as all my data was encrypted with strange random folder name. I had to format data to boot into ROM. I am using orange fox kwrnel 11.0. How can i prevent this from happen in future when flashing other ROM?
shoeseat said:
Yesterday i flashed xiome eu stable ROM from weekly beta but couldn't boot as all my data was encrypted with strange random folder name. I had to format data to boot into ROM. I am using orange fox kwrnel 11.0. How can i prevent this from happen in future when flashing other ROM?
Click to expand...
Click to collapse
When switching ROM you have to Format Data in TWRP. Not just because of strange folder names but to avoid all kinds of troubles. New ROM will encrypt Data and Internal storage, you will have protection and everything will properly work as originally
New TWRP versions know how to read encryption, when booting to TWRP you will have to enter your Android Pin/Pattern (same as when you boot to Android or you use to unlock the screem in Android) and TWRP will then also work properly
That's the price of switching ROMs. Backup your Data to PC, backup things (WA and so) to Google and cloud, etc, and restore upon installing the new ROM (btw, I use also Mi Cloud and it restores automatically my apps and other things)
Otherwise, you had to Forrmat Data originally and flash DFE = Disable Forced Encryption (I never used, old school from the times when TWRP did not know to work with encrypted Data and Internal storage) with all your ROMs to prevent them to encrypt. However, you would have no protection then (in Android and TWRP).
Furthermore, after switching the ROM, you could expect then various troubles since new ROM trying to work with settings saved by the old ROM.
Hence, you would still have to Wipe Data upon that ROM switch - therefore, what do you get then by avoiding formatting and proper encryption to automatically happen when booting to the newly installed ROM
Thanks for the explanation but this encryption of data and formatting data partition was never the problem in my past devicea like nexus 5 and oneplus 3 roms. I freely flashed many roms in those devices without formatting my internal storage. Wiping data and system were the only thing i did in past to flash new rom. Is this the xiome phones only restriction?
Also if i have to backup all my data in PC Everytime i want to switch to new rom then it's very troublesome and time consuming aa i have 200GB of data in my internal storage. Isn't their any easy way to flash ROMS without entirely formatting my personal data?
shoeseat said:
Thanks for the explanation but this encryption of data and formatting data partition was never the problem in my past devicea like nexus 5 and oneplus 3 roms. I freely flashed many roms in those devices without formatting my internal storage. Wiping data and system were the only thing i did in past to flash new rom. Is this the xiome phones only restriction?
Also if i have to backup all my data in PC Everytime i want to switch to new rom then it's very troublesome and time consuming aa i have 200GB of data in my internal storage. Isn't their any easy way to flash ROMS without entirely formatting my personal data?
Click to expand...
Click to collapse
Things change with the evolution of Android. In the old times rooting was simple, just run King(o) root and then flash CM recovery by flashify, and flash the ROM you wanted - but it doesn't apply anymore
zgfg said:
When switching ROM you have to Format Data in TWRP. Not just because of strange folder names but to avoid all kinds of troubles. New ROM will encrypt Data and Internal storage, you will have protection and everything will properly work as originally
New TWRP versions know how to read encryption, when booting to TWRP you will have to enter your Android Pin/Pattern (same as when you boot to Android or you use to unlock the screem in Android) and TWRP will then also work properly
That's the price of switching ROMs. Backup your Data to PC, backup things (WA and so) to Google and cloud, etc, and restore upon installing the new ROM (btw, I use also Mi Cloud and it restores automatically my apps and other things)
Otherwise, you had to Forrmat Data originally and flash DFE = Disable Forced Encryption (I never used, old school from the times when TWRP did not know to work with encrypted Data and Internal storage) with all your ROMs to prevent them to encrypt. However, you would have no protection then (in Android and TWRP).
Furthermore, after switching the ROM, you could expect then various troubles since new ROM trying to work with settings saved by the old ROM.
Hence, you would still have to Wipe Data upon that ROM switch - therefore, what do you get then by avoiding formatting and proper encryption to automatically happen when booting to the newly installed ROM
Click to expand...
Click to collapse
I agree with you point here but i have been using decrypted storage since i go this phone..Mostly i delete my android folder and other folder which might be created by rom itself after flashing any rom with dfe and never had any issue on new roms.

Question UNABLE TO BACK UP ANY ANDROID 12 MIUI OR CUSTOM ROM (internal storage 0mb) in TWRP

I'm able to use backup & restore in Android 11 custom or miui rom. but unable to use it when i flashed android 12 roms.
Can anyone walk me through how to fix this.
Did the ff workaround in youtube as well in any similar post but still not working.
1. Advance wipe > click data >Repair or Change File System > Change File System to EXT2 & EXT4
2. Format data
This process is temporarily working the internal storage is visible, but after booting to system and go back to twrp recovery, the internal storage appears 0mb again.
I flashed stock rom/ eu rom as well in TWRP as i read this is worked with them. but not on my end.
Kindly help me to solve this issue please.
TWRP is not yet compatible with Android 12, it can't decrypt the internal storage. You can't fix it until TWRP (or some other recovery) solves Android 12 support.
I think in theory you might be able to back up the ROM to an unencrypted storage like an SD Card or OTG USB drive, but I'm not sure (and I'm even less sure if such backup could even be successfully restored if you back the partition up without decrypting).
Use otg usb
rufio85 said:
I'm able to use backup & restore in Android 11 custom or miui rom. but unable to use it when i flashed android 12 roms.
Can anyone walk me through how to fix this.
Did the ff workaround in youtube as well in any similar post but still not working.
1. Advance wipe > click data >Repair or Change File System > Change File System to EXT2 & EXT4
2. Format data
This process is temporarily working the internal storage is visible, but after booting to system and go back to twrp recovery, the internal storage appears 0mb again.
I flashed stock rom/ eu rom as well in TWRP as i read this is worked with them. but not on my end.
Kindly help me to solve this issue please.
Click to expand...
Click to collapse
Case_ said:
TWRP is not yet compatible with Android 12, it can't decrypt the internal storage. You can't fix it until TWRP (or some other recovery) solves Android 12 support.
I think in theory you might be able to back up the ROM to an unencrypted storage like an SD Card or OTG USB drive, but I'm not sure (and I'm even less sure if such backup could even be successfully restored if you back the partition up without decrypting).
Click to expand...
Click to collapse
Cisuwek said:
Use otg usb
Click to expand...
Click to collapse
In my opinion it's only possible to backup encrypted storage as in A12 if you flash DfE but then you'll have to format and later you're decrypted and in future you can backup via TWRP.
But you can copy actual personal files with a file manager, if android is booted up, to external storages or internal micro SD. android internal app data can't copied.
Laptapper said:
In my opinion it's only possible to backup encrypted storage as in A12 if you flash DfE but then you'll have to format and later you're decrypted and in future you can backup via TWRP.
But you can copy actual personal files with a file manager, if android is booted up, to external storages or internal micro SD. android internal app data can't copied.
Click to expand...
Click to collapse
You can install cutom roms, flash magisk, kernel and other stuff. The memory is only encrypted, the rest works perfectly fine. Have you checked on the latest recovery?
A new kernel was flashed an hour ago. I have made a backup of the boot and dtbo images. It really works
Not checked to backup complete rom, but suppose it's possible with otg
Cisuwek said:
You can install cutom roms, flash magisk, kernel and other stuff. The memory is only encrypted, the rest works perfectly fine. Have you checked on the latest recovery?
A new kernel was flashed an hour ago. I have made a backup of the boot and dtbo images. It really works
Not checked to backup complete rom, but suppose it's possible with otg
Click to expand...
Click to collapse
.....Not checked to backup complete rom, but suppose it's possible with otg....?
But this is what he wants to do, or not?
Cisuwek said:
You can install cutom roms, flash magisk, kernel and other stuff.
Click to expand...
Click to collapse
I guess (I was in fact asking about exactly this in another thread recently), but then if the install script tries to modify the data partition in any way (which remains encrypted with current recoveries under Android 12), you're almost certainly screwed and at best the installation will fail, at worst you'll have to reinstall everything.
Thanks for the reply guys..this already solved..with the help of @Laptapper in other thread. Using orangefox, dfe,
How to flash a Android 12 ROM without decryption problem?
I've been struggling to flash Android 12 without my internal storage to be unaccessible by TWRP... I simply can't decrypt my data and the only way to fix it is to format data and revert back to a Android 11 ROM. Did anyone manage to flash Android...
forum.xda-developers.com
here's the thread.
Case_ said:
I guess (I was in fact asking about exactly this in another thread recently), but then if the install script tries to modify the data partition in any way (which remains encrypted with current recoveries under Android 12), you're almost certainly screwed and at best the installation will fail, at worst you'll have to reinstall everything.
Click to expand...
Click to collapse
Previously I had a Redmi note 7. On the encrypted partition, I could also install everything in the same way. I am not a specialist, my knowledge has ended here.

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