[Redmi 7A Guides, News, & Discussion] xontax:
UPDATE 10/16/19

I don't know why the development on XDA for redmi 7a is unbelievable lazy, but this is what I stole from 4pda!

1.Unlock the bootloader if you have not already done so.

2. Download vbmeta.img file (4 KB),

Download patched_boot_10.2.5EU.img,

https://filehorst.de/d/cFqIgsev,

2a For patched boot 10.2.6. Global Download

https://filehorst.de/d/cBeCunfm

2b. For patched boot 10.2.5. Global Download

https://filehorst.de/d/cDpHyAId

3. Download recovery

[URL="https://filehorst.de/d/cHyobAcd"]TWRP 3.3.1-1003 LRTeam[/URL]
[URL="https://filehorst.de/d/crqywBxx"]TWRP 3.3.1-1003-DX mod[/URL]
[URL="https://filehorst.de/d/cbvACbwB"]TWRP 3.3.1-1[/URL]

4. Drop the vbmeta file into the adb folder. Next, rename the patched boot file to boot.img and paste it with recovery into the adb folder

fastboot flash recovery recovery.img
fastboot flash boot boot.img
fastboot reboot

For patched boot but generally for the launch of custom firmware on our phone, say thanks YaAlex3

5. Reboot the phone by holding "volume + and power" the phone will reboot into TWRP

6. Flash Magisk

7. Download the GSI firmware. NEED A64 A / B . no other will do.

https://xdaforums.com/project-treble/trebleenabled-device-development

GSI Firmware (A64 A/B):

AOSP 9.0 v119 (special instruction: search for boot fix and flash certification)

Descendant 4.0.1

DotOS

EvolutionX

PE Plus

MSM Extended

/e/

PixelExperience

ViperOS 6.5

LineageOS

And download and upload the Attached file Permissiver_v4.zip file (1.1 MB)

8. Unpack the downloaded firmware, you should get a file with the extension .img We

upload it to the USB flash drive. This can be done without leaving the recovery by simply connecting the phone via cable.

9. Make the Data format, wipe System, Davlik / Cache

8a. Install attached no-verity-encrypt-ysl to stay encrypted (optional)

10. Select Install img below - select the firmware file - select System

9a. If you like Gapps, Install BiTGApps Pie 9.0.0 (optional)

https://xdaforums.com/android/software/arm-bitgapps-variants-t3959373

11. Flash Permissiver_v4.zip

12. Go back, select reboot - to the bootloader

13. In the adb folder, launch the console by holding the Shift button on the keyboard and right-clicking in an empty area, select the

line to open the command window.

We enter the fastboot flash vbmeta and then fastboot reboot

fastboot flash vbmeta vbmeta.img
fastboot reboot

Everyone is now waiting for the phone to turn on (at first it will reboot it's normal)

Note: vbmeta can also be flashed before the start of the whole action, as you wish.

Note 2: If suddenly there is no memory card, you can wipe System, flash everything and format the latest date.

Important Notes (FAQ)

[ROOT]Video recording fix:

put

media.camera.ts.monotonic=0

to /vendor/build.prop

[ROOT] Fix brightness

Turn on USB debugging, run the terminal \ cmd on the PC, write

adb shell
su
setprop persist.sys.qcom-brightness $ (cat / sys / class / leds / lcd-backlight / max_brightness)

Rejoice.

How to certify a device for GSI

Important: If you are at the initial setup stage, you must complete it. If notifications about the need for certification interfere, disable them.

We need to find our GSF Device-ID

1. Download the application

2. Copy “Google Service Framework (GSF) there.”

3. Go here , paste and click the button.

Or Just flash this zip and you are good to go

https://drive.google.com/file/d/1DTGpGrcjweZbN9wUdSSq8uQTmgxf0aD2/view