How To Guide How to flash gsi on t220, t225 with Twrp

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Difficul

Senior Member
Jul 2, 2021
254
11
first we need twrp :https://forum.xda-developers.com/t/...7-lite-sm-t220-sm-t225-sm-t227.4467157/page-4
flash Twrp with odin
adb :https://developer.android.com/studi...hBsz3t9Zv2XnXQoRfThoCbpUQAvD_BwE&gclsrc=aw.ds
when you boot into twrp without touch try rebooting with adb
adb devices (make sure the device is recognized)
adb reboot recovery
choose the gsi you want :https://magiskzip.com/gsi-list-phhusson/
Because internal storage and adb sideload are disabled we need 8Gb Sd card
vbmeta.img from google :https://dl.google.com/developers/android/qt/images/gsi/vbmeta.img
in this picture i flash magisk








Screenshot_2022-07-15-22-22-13.png



Thank @Zillion and @Skorpion96 for this Twrp build
 
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Skorpion96

Senior Member
Aug 28, 2014
270
52
Palermo
Ok first guide needs to be more detailed, second when touch don't work in recovery you can't reboot with adb, instead you can connect an otg mouse and reboot with reboot from twrp menu. Another thing is that after flashing gsi technically you can disable encryption, copy files like on twrp guide and format data.
 

Difficul

Senior Member
Jul 2, 2021
254
11
Don't flash gsi
since i bricked the device, if the device keeps booting up, press the volume down button while plugging in the computer and hold the volume up and down keys
 

tom.android

Senior Member
Jul 12, 2016
885
284
Power + Volumn down. = Forced Reboot

Volumn up + Volumn down + USB Then Volumn up = Download mode (ODin)

Use only Stock ROM...
 
Last edited:

Skorpion96

Senior Member
Aug 28, 2014
270
52
Palermo
Don't flash gsi
since i bricked the device, if the device keeps booting up, press the volume down button while plugging in the computer and hold the volume up and down keys
Obliviously you flashed wrong gsi, gsi as you may or may not know are for an architecture and for a precise slot so obviously if something is not compatible it won't boot
 

nirogu325

Senior Member
Oct 15, 2010
3,687
1,913
So the partition of the tab I should choose is a or ab
i choose ab
You can choose A, AB or B (our device is a-only though), it all depends on the filename, this can differ between GSIs. Just be careful with the architecture, choose arm64 not a64 or binder64. More about interpreting GSI file names by tapping in the following spoiler.
Some information you should know about knowing what type of gsi it is

<ARCH>_xyZ

<ARCH>
can either be arm, a64 (arm32_binder64) or arm64
x
can either be a or b
y
can either be v, o, g or f
Z
can be N or S

b
= a/b
a = a-only

g = gapps
o = gapps-go
v = vanilla (no gapps included)
f = floss (free & open source apps instead gapps)

N = no superuser
S = superuser included

so in most common example "arm64_avN" is ARM64 A-only vanilla with no superuser
 

Difficul

Senior Member
Jul 2, 2021
254
11
You can choose A, AB or B (our device is a-only though), it all depends on the filename, this can differ between GSIs. Just be careful with the architecture, choose arm64 not a64 or binder64. More about interpreting GSI file names by tapping in the following spoiler.
Some information you should know about knowing what type of gsi it is

<ARCH>_xyZ

<ARCH>
can either be arm, a64 (arm32_binder64) or arm64
x
can either be a or b
y
can either be v, o, g or f
Z
can be N or S

b
= a/b
a = a-only

g = gapps
o = gapps-go
v = vanilla (no gapps included)
f = floss (free & open source apps instead gapps)

N = no superuser
S = superuser included

so in most common example "arm64_avN" is ARM64 A-only vanilla with no superuser
1658046455297.png

I flashed this and my device was bricked
 

nirogu325

Senior Member
Oct 15, 2010
3,687
1,913
What is the best rom for mtk in your opinion?
I'd say choose any GSI you want because they use almost the same amount of resources and for our tablet, more than half of the customization options don't work because they're designed for phones so in the end they all feel similar.
 

decentdude

Member
Oct 14, 2017
17
0
What is the use of vbmeta.img file? Please tell me complete steps for flashing gsi and magisk. Thank you in advance.
 

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