Database Develop

Downgrade from LOS15 (Android 8.x) to 7.x?

Hi.
I want to downgrade my Mi5 from current Android 8.1.0 (LineageOS 15.1.-xxxxxx) to final stable 7.x.
Is it safe to just do a clean flash via FlashBoot with some MIUI stock ROM on 7.x and then TWRP to LOS 14?
Or would I experience some massive foooooook with partitions or sth?

raven6679 said:
Hi.
I want to downgrade my Mi5 from current Android 8.1.0 (LineageOS 15.1.-xxxxxx) to final stable 7.x.
Is it safe to just do a clean flash via FlashBoot with some MIUI stock ROM on 7.x and then TWRP to LOS 14?
Or would I experience some massive foooooook with partitions or sth?
Click to expand...
Click to collapse
If you want to go to Android 7.x rom from 8.x.x you may need to Format Internal Storage **if your phone was encrypted**.
You can also just flash lineageOS 14.1 because if you use LOS 15.1 you must use Facebook 8.5.x.x and above . That's enough for all of Android 7.x ROMs

Formatting is not a problem. Thank you.

I think you can flash this rom
https://forum.xda-developers.com/mi-5/development/jdc-nougat-revived-t3834821/page5
This is aosp jdc with newest patches and fix

Yes. Wip all options. I did it and back to 20180220 version, using now.
After full wipe, use ADB to pull the .zip (rom and gapps) to the phone (I thought that is the best way) then flash this by TWRP.
Looks much better at all. Here could be, i need to fix somethings:
View attachment 4589645
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Enviado de meu MI 5 usando o Tapatalk

Thanks.

[ROM][UNOFFICIAL][CHARLOTTE][9] Cosmic-OS Corona

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Cosmic-OS is a Custom ROM based on Android Open Source Project (AOSP) with additional features, performance and battery life improvements.
Click to expand...
Click to collapse
Requirements:
EMUI 9.0.0.195
P20 Pro L09 or L29
Instructions :
Wipe data and cache in stock recovery (unplug cable and hold volume up while booting)
Reboot to fastboot
Flash TWRP
Code:
fastboot flash recovery_ramdisk twrp.img
Reboot to TWRP (unplug cable and hold volume up while booting)
Sideload Rom
Sideload Gapps
Reboot to system
Download:
Cosmic-OS Corona for Charlotte
Gapps by OpenGapps 9.0 ARM64
TWRP by kessaras
EMUI 9.0.0.195
Resources
Credits:
LuK1337
Lineage
Cosmic-OS
EMUI:
Use THIS tool in combination with the EMUI files linked above. It'll guide you through the installation.
Magisk:
I would use the magisk canary release.
I prepared a patched ramdisk here for the lazy folks. Flash it after you're done with the rom installation.
Code:
fastboot flash recovery_ramdisk MagiskPatchedRecovery.img
Gpay:
Working for me when hiding google stuff in magisk and using THIS module.
XDA:DevDB Information
[ROM][UNOFFICIAL][CHARLOTTE][9] Cosmic-OS Corona, ROM for the Huawei P20 Pro
Contributors
Iocere
Source Code: https://github.com/Cosmic-OS
ROM OS Version: 9.x Pie
ROM Kernel: Linux 4.x
ROM Firmware Required: EMUI 9.0.0.195
Based On: Lineage
Version Information
Status: Testing
Created 2019-10-09
Last Updated 2019-10-09

Is kernel are permissive?

E.Sivko said:
Is kernel are permissive?
Click to expand...
Click to collapse

Error booting Huawei P8 Lite 2017 (prague)

Hello guys, i have a P8 Lite 2017 and i have successfully unlock the bootloader and install custom TWRP, but after i tried to flash some Custom Rom (i tried LineageOs 16.1 and DotOs based on Android 9) when i try to boot at the screen "Your device has been unlocked and can't be trusted." the ROMs doesn't boot it appears the message "Your device is booting now..." someone got the same problem and fixed it?
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hi you still have the problem? , do you root it??

TheLokins47 said:
Hello guys, i have a P8 Lite 2017 and i have successfully unlock the bootloader and install custom TWRP, but after i tried to flash some Custom Rom (i tried LineageOs 16.1 and DotOs based on Android 9) when i try to boot at the screen "Your device has been unlocked and can't be trusted." the ROMs doesn't boot it appears the message "Your device is booting now..." someone got the same problem and fixed it?
View attachment 5261023
Click to expand...
Click to collapse
That's because newer versions of EMUI prevent you from booting custom ROMs
I had the same issue
The way i fixed it was i flashed an older EMUI through Dload
Downgrading EMUI
Download this : https://androidhost.ru/1JVE
Extract it and put the dload folder into the root of ur sdcard
Turn off the phone
Press power and vol + & - buttons
Once u see huawei logo stop pressing power but keep doing on volume buttons
It will install
Now that you have downgraded your EMUI , you can unlock your bootloader again , flash TWRP, and flash your favourite ROM!
I hope i helped you ))

Official AOSP for Huawei (POT-LX1) - LeaOS-PHH (android 13 version)

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LeaOS is a project which based on AOSP with trebledroid patches.
This build includes settings parameters for Huawei POT-LX1/POT-LX1A as well as several evolutions:
Offline charging
AGPS Supl20
SafetyNet
GCam for kirin
Erofs system partition
Installation
Download system file : "LeaOS-A13-20230224-iceows-pot.img.xz" (without google apps) or "LeaOS-A13-20230224-iceows-google-pot.img.xz" (google apps version)
Extract img file
Flash system image : fastboot flash system <drag system.img here>
Boot into twrp: power + vol+ while NOT connected to pc
Wipe cache, dalvik/art cache, internal storage, data
Reboot to System and setup with android assistant
Enjoy !!!
If system partition is two small to flash img, increase it with this tools
Huawei Partition Kit - Enlarge system partition
Huawei Partition Kit This kit allows you to enlarge/reduce (2Go->5Go) the system partition on a Huawei kirin 65x, 960 or 970 phone. You can do it from a Huawei android 9 rom, a Lineage 18.1, 19.1, 20, or an AOSP 11,12 or 13. The kit reinstalls...
forum.xda-developers.com
Source Code:
https://github.com/Iceows
ROM OS Version: Android 13.0
ROM Kernel: Stock kernel
ROM Firmware Required: EMUI 9.1
Based On: Google AOSP + TrebleDroid patches
Support Group
Channel update

How to unlock bl?

TabletopDock9 said:
How to unlock bl?
Click to expand...
Click to collapse
With hcu-client

Help. My device is bootlooping, fastboot mode is working but cannot flash anything

Hello. I have motorola x4 Indian variant (xt1900-2). I have bootloader unlocked on my device. Few days ago I had Pixel Experience 12 running on my phone, and I tried to update it to Pixel Experience 13 using PixelExperience's own recovery through ADB Sideload. It worked but after that I tried to flash gapps using same way but it was not working. I thought TWRP recovery can install it So I flashed TWRP zip using same method in recovery's update using ADB Sideload option. Recovery got flashed.
Now, my phone is bootlooping since then after it rebooted to system after flashing twrp zip. I can access fastboot on my phone, but any command I enter in fast such as 'fastboot boot recovery.img' gets stuck forever.
Also, sometimes commands dont even work. Fastboot says unknown command. I tried using different cables on diffrent ports including 2.0, 3.0 ports, and also using c-to-c type cable but still no luck. I even tried to downgrade to Windows 10 from 11. Still same issue. I Can't boot to recovery, cant flash recovery, cant boot into OS, just fastboot is working.
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Please help me in this case. I have original firmware available for my device. I tried flashing it but gives same error command not found or gets stuck forever.