How To Guide [GUIDE] [T220/T225] Flash a GSI on the A7 Lite (without TWRP)

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ktdt00

Senior Member
May 23, 2006
168
36
Image reuploaded. Made manually now.

- Project Elixir 3.5 (Android 13) For SM-T220
- Region: XAR
- Firmware needed: T220XXU1CVL7 (Android 13)
- Has GApps and Magisk 25.2
- Security: January 5th, 2023.
- microSD exFAT compatible
DISCLAIMER: FIRMWARE NEEDED IS T220XXU1CVL7 (Android 13). I'm just sharing, not open to GSI building requests/tutorials and I'm not a developer. DO NOT FLASH IF YOU HAVEN'T FLASHED THE ANDROID 13 FIRMWARE SPECIFIED ABOVE, MEANING BOOTLOADER, THE CSC FILE ALONG WITH THE FOLLOWING LINKED GSI IMAGE IN THE AP SLOT. PREPARE FOR A FACTORY RESET. IF YOU DON'T KNOW WHICH FIRMWARE YOUR T220 IS ON, THEN YOU SHOULD *NOT* BE HERE. I AM NOT RESPONSIBLE FOR ANY DAMAGES BY FLASHING THIS. GSI image: HERE

Remember to set "Smallest width" on either "Display" settings or "Developer options" at 598 if you don't want the toolbar.

Set these and reboot right after.
Samsung Features
-Enable stereo audio mode
-Enable double tap to wake (after a reboot unlock at least once)
Misc features
-Use alternate way to detect headsets
-Bluetooth workarounds: MediaTek
-Force-disable A2DP offload

Excellent build! Thank you taking the time to create it and make it available to us! It's fast and smooth as butter. I've only noticed that Accubattery can't access the battery stats but I guess that's probably GSI specific. Anyway, thanks again!!
 

aospray

Senior Member
Feb 7, 2017
89
30
- Project Elixir 3.5 (Android 13) For SM-T220 (January 31st update)
- Region: XAR
- Firmware needed: T220XXU1CVL7 (Android 13)
- Has GApps and Magisk 25.2
- Security: January 5th, 2023.
- microSD exFAT compatible
DISCLAIMER: FIRMWARE NEEDED IS T220XXU1CVL7 (Android 13). I'm just sharing, not open to GSI building requests/tutorials and I'm not a developer. DO NOT FLASH IF YOU HAVEN'T FLASHED THE ANDROID 13 FIRMWARE SPECIFIED ABOVE, MEANING BOOTLOADER, THE CSC FILE ALONG WITH THE FOLLOWING LINKED GSI IMAGE IN THE AP SLOT. PREPARE FOR A FACTORY RESET. IF YOU DON'T KNOW WHICH FIRMWARE YOUR T220 IS ON, THEN YOU SHOULD *NOT* BE HERE. I AM NOT RESPONSIBLE FOR ANY DAMAGES BY FLASHING THIS. GSI image: HERE

Remember to set "Smallest width" on either "Display" settings or "Developer options" at 598 if you don't want the toolbar.

Set these and reboot right after.
Samsung Features
-Enable stereo audio mode
-Enable double tap to wake (after a reboot unlock at least once)
Misc features
-Use alternate way to detect headsets
-Bluetooth workarounds: MediaTek
-Force-disable A2DP offload
Thank you so much for your Project Elixir build, nirogu325. Was just what I was looking for! I will flash this once I flash the stock Android 13 firmware.
 

ktdt00

Senior Member
May 23, 2006
168
36
Android 13 GSM gsi_gms_arm64-exp-T2B2.221216.006-9443277-12a8e193 with SM-T220_XAR_T220XXU1CVL7 rooted with Magisk works. Thanks for the OP and all the contributors to this thread!
 

birsifironde

Senior Member
Oct 3, 2014
71
7
Ankara
Samsung Galaxy S4
Honor 5X
- Project Elixir 3.5 (Android 13) For SM-T220 (January 31st update)
- Region: XAR
- Firmware needed: T220XXU1CVL7 (Android 13)
- Has GApps and Magisk 25.2
- Security: January 5th, 2023.
- microSD exFAT compatible
DISCLAIMER: FIRMWARE NEEDED IS T220XXU1CVL7 (Android 13). I'm just sharing, not open to GSI building requests/tutorials and I'm not a developer. DO NOT FLASH IF YOU HAVEN'T FLASHED THE ANDROID 13 FIRMWARE SPECIFIED ABOVE, MEANING BOOTLOADER, THE CSC FILE ALONG WITH THE FOLLOWING LINKED GSI IMAGE IN THE AP SLOT. PREPARE FOR A FACTORY RESET. IF YOU DON'T KNOW WHICH FIRMWARE YOUR T220 IS ON, THEN YOU SHOULD *NOT* BE HERE. I AM NOT RESPONSIBLE FOR ANY DAMAGES BY FLASHING THIS. GSI image: HERE

Remember to set "Smallest width" on either "Display" settings or "Developer options" at 598 if you don't want the toolbar.

Set these and reboot right after.
Samsung Features
-Enable stereo audio mode
-Enable double tap to wake (after a reboot unlock at least once)
Misc features
-Use alternate way to detect headsets
-Bluetooth workarounds: MediaTek
-Force-disable A2DP offload
I directly flashed this build via Odin and it worked lol
I just flashed latest BL + CSC + this gsi. Everything looks fine, thanks 🙏
 

FridgeArmies

Member
Jan 13, 2023
12
2
Samsung Galaxy S5
- CherishOS 4.5 (Android 13) For SM-T220
- Region: XAR
- Firmware needed: T220XXU1CVL7 (Android 13)
- Has GApps and Magisk 25.2
- Security Patch Level: 2023-02-05
- microSD exFAT compatible
DISCLAIMER: FIRMWARE NEEDED IS T220XXU1CVL7 (Android 13). I'm just sharing, not open to GSI building requests/tutorials and I'm not a developer. I'M NOT RESPONSIBLE FOR ANY DAMAGES BY FLASHING THIS. DO NOT FLASH IF YOU HAVEN'T FLASHED THE ANDROID 13 FIRMWARE SPECIFIED ABOVE, MEANING BOOTLOADER, THE CSC FILE ALONG WITH THE FOLLOWING LINKED GSI IMAGE IN THE AP SLOT. PREPARE FOR A FACTORY RESET. IF YOU DON'T KNOW WHICH FIRMWARE YOUR SM-T220 IS ON, THEN YOU SHOULD *NOT* BE HERE. GSI image: CherishOS_A13-RO-arm64-bgN-slim_20230210.img

Remember to set "Smallest width" on either "Display" settings or "Developer options" at 598 if you don't want the toolbar.

Set these and reboot right after.
Samsung Features
-Enable stereo audio mode
-Enable double tap to wake (after a reboot unlock at least once)
Misc features
-Use alternate way to detect headsets
-Bluetooth workarounds: MediaTek
-Force-disable A2DP offload
is there a SM-t225 version?
 

nirogu325

Senior Member
Oct 15, 2010
3,760
1,959
- Project Elixir 3.6 (Android 13) For SM-T220 (February 23rd update)
- Region: XAR
- Firmware needed: T220XXS2CWA6 (Android 13)
- Has GApps and Magisk 25.2
- Security: February 5th, 2023.
- microSD exFAT compatible
DISCLAIMER: FIRMWARE NEEDED IS T220XXS2WA6 (Android 13). I'm just sharing, not open to GSI building requests/tutorials and I'm not a developer. DO NOT FLASH IF YOU HAVEN'T FLASHED THE ANDROID 13 FIRMWARE SPECIFIED ABOVE, MEANING BOOTLOADER, THE CSC FILE ALONG WITH THE FOLLOWING LINKED GSI IMAGE IN THE AP SLOT. PREPARE FOR A FACTORY RESET. IF YOU DON'T KNOW WHICH FIRMWARE YOUR T220 IS ON, THEN YOU SHOULD *NOT* BE HERE. I AM NOT RESPONSIBLE FOR ANY DAMAGES BY FLASHING THIS. GSI image: HERE

Remember:
  1. Enable Double Tap To Wake in Phh Treble Settings > Samsung features > Enable double tap to wake. Reboot.
  2. Fix headset support enabling "Use alternate way to detect headsets" in Phh Treble Settings > Misc features. Reboot.
  3. Set "Smallest width" on either "Display" settings or "Developer options" at 598 if you don't want the toolbar.
 
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the_Victorian

Senior Member
Apr 12, 2014
400
106
DC
Honor 7X
Apple iPhone 12
- Project Elixir 3.6 (Android 13) For SM-T220 (February 23rd update)
- Region: XAR
- Firmware needed: T220XXS2CWA6 (Android 13)
- Has GApps and Magisk 25.2
- Security: February 5th, 2023.
- microSD exFAT compatible
DISCLAIMER: FIRMWARE NEEDED IS T220XXS2WA6 (Android 13). I'm just sharing, not open to GSI building requests/tutorials and I'm not a developer. DO NOT FLASH IF YOU HAVEN'T FLASHED THE ANDROID 13 FIRMWARE SPECIFIED ABOVE, MEANING BOOTLOADER, THE CSC FILE ALONG WITH THE FOLLOWING LINKED GSI IMAGE IN THE AP SLOT. PREPARE FOR A FACTORY RESET. IF YOU DON'T KNOW WHICH FIRMWARE YOUR T220 IS ON, THEN YOU SHOULD *NOT* BE HERE. I AM NOT RESPONSIBLE FOR ANY DAMAGES BY FLASHING THIS. GSI image: HERE

Remember to set "Smallest width" on either "Display" settings or "Developer options" at 598 if you don't want the toolbar.

Set these and reboot right after.
Samsung Features
-Enable stereo audio mode
-Enable double tap to wake (after a reboot unlock at least once)
Misc features
-Use alternate way to detect headsets
-Bluetooth workarounds: MediaTek
-Force-disable A2DP offload
Thank you for sharing this! Just rooted and installed on my WA6 XAR T220. Do you have any recommendations for getting Bluetooth headphones to work better? I can get them to work sometimes only. It will either keep playing on device speakers or only play on headphones very quietly until I toggle a bunch of settings or reboot. Advice appreciated, thanks!
 

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  • 1
    - Project Elixir 3.6 (Android 13) For SM-T220 (February 23rd update)
    - Region: XAR
    - Firmware needed: T220XXS2CWA6 (Android 13)
    - Has GApps and Magisk 25.2
    - Security: February 5th, 2023.
    - microSD exFAT compatible
    DISCLAIMER: FIRMWARE NEEDED IS T220XXS2WA6 (Android 13). I'm just sharing, not open to GSI building requests/tutorials and I'm not a developer. DO NOT FLASH IF YOU HAVEN'T FLASHED THE ANDROID 13 FIRMWARE SPECIFIED ABOVE, MEANING BOOTLOADER, THE CSC FILE ALONG WITH THE FOLLOWING LINKED GSI IMAGE IN THE AP SLOT. PREPARE FOR A FACTORY RESET. IF YOU DON'T KNOW WHICH FIRMWARE YOUR T220 IS ON, THEN YOU SHOULD *NOT* BE HERE. I AM NOT RESPONSIBLE FOR ANY DAMAGES BY FLASHING THIS. GSI image: HERE

    Remember:
    1. Enable Double Tap To Wake in Phh Treble Settings > Samsung features > Enable double tap to wake. Reboot.
    2. Fix headset support enabling "Use alternate way to detect headsets" in Phh Treble Settings > Misc features. Reboot.
    3. Set "Smallest width" on either "Display" settings or "Developer options" at 598 if you don't want the toolbar.
    1
    Thank you for sharing this! Just rooted and installed on my WA6 XAR T220. Do you have any recommendations for getting Bluetooth headphones to work better? I can get them to work sometimes only. It will either keep playing on device speakers or only play on headphones very quietly until I toggle a bunch of settings or reboot. Advice appreciated, thanks!
    No idea, sorry.
    1
    Thanks anyway! If anyone else using this GSI has the same prob and finds a solution please let me know
    Or you can just try another GSI using FastbootD in your recovery which is a faster method. Yes, I bundled that custom recovery within the custom AP file -credit goes to tom.android.

    1. Enter Fastboot through Stock Recovery 2. Enter "fastboot erase system" in command prompt 3. "fastboot flash system insertGSInameHere.img" 4. "fastboot -w" 5. Reboot to Recovery to do Factory Reset 6. Enjoy
    1
    Thank you for sharing this! Just rooted and installed on my WA6 XAR T220. Do you have any recommendations for getting Bluetooth headphones to work better? I can get them to work sometimes only. It will either keep playing on device speakers or only play on headphones very quietly until I toggle a bunch of settings or reboot. Advice appreciated, thanks!
    because you used "Phh Treble Setting" to configured in Android 13 GSI , Do not set it , All bluetooth fixed errors were patched already.
  • 8
    Hi everyone, this is a short guide on how to flash a GSI on the A7 Lite (without TWRP).

    Its a nice little tablet for the price but it doesn't have a very powerful SOC and for me the One UI is barely usable on this device. The launcher and the whole system UI feel extremely laggy, but apps generally run fine.

    I tried phhusson's custom Android 12 GSI and the device was almost resurrected. Much much less UI lag and the battery life is the same as stock ROM. The only thing i found not working is MTP but i don't need it.

    Since i saw a couple users here asking about GSIs i decided to make a very simple guide.

    As always do this at your own risk. You may brick your device. You will void your warranty.

    Follow the guide only if you know what your are doing. Read each step carefully and avoid copy pasting stuff randomly.

    I won't go deep into details as i believe you should have some basic knowledge if you decide to do this.

    The procedure sould work for both T220 and T225 (i tested it on a T220).

    I did this on Windows using WSL for some of the steps.

    Sources


    Thanks to @kkoo and @Brepro1 for the useful info

    - https://forum.xda-developers.com/t/...sing-odin-without-twrp-phh-lineageos.4114435/
    - https://forum.xda-developers.com/t/...r-img-and-flashing-our-modifications.4196625/

    Requirements​


    - Unlocked bootloader

    If you haven't done this already follow the steps in parts 1-2 from:


    - Latest official ROM

    I used T220XXU1AVE1 for EUX region


    - Download your preferred GSI

    I used AOSP 12.1 v414 with gapps from phhusson


    - Clean vbmeta.img from Google


    Tools​


    - lz4


    - simg2img


    - lpunpack and lpmake


    - tar-md5-script-tool

    Use the attached tar-md5-script-tool.zip

    Steps​


    1. Extract official ROM files (BL, AP, CP, CSC)

    2. Extract AP .tar.md5

    3. Decompress the extracted super.img.lz4

    Code:
    lz4 -d super.img.lz4 super.img

    4. Convert the sparse super.img

    Code:
    simg2img super.img super.ext4.img

    5. Unpack super.ext4.img

    Code:
    lpunpack super.ext4.img

    I got 4 partitions in my image (should be the same for all T220/T225 ROMs):

    - odm.img
    - product.img
    - system.img
    - vendor.img

    6. Replace system.img with your GSI (rename it to system.img)

    7. Get the size of all partitions and the size of the original super.ext4.img (not the sparse super.img)

    Code:
    stat -c '%n %s' IMG_FILE.img

    8. Repack super.img

    Code:
    lpmake --metadata-size 65536 \
    --super-name super \
    --metadata-slots 2 \
    --device super:ORIGINAL_SUPER_IMG_SIZE \
    --group main:SUM_OF_ALL_PARTITIONS_SIZES \
    --partition odm:readonly:ODM_PARTITION_SIZE:main \
    --image odm=./odm.img \
    --partition product:readonly:PRODUCT_PARTITION_SIZE:main \
    --image product=./product.img \
    --partition system:readonly:SYSTEM_PARTITION_SIZE:main \
    --image system=./system.img \
    --partition vendor:readonly:VENDOR_PARTITION_SIZE:main \
    --image vendor=./vendor.img \
    --sparse \
    --output ./super_new.img

    Replace ORIGINAL_SUPER_IMG_SIZE, SUM_OF_ALL_PARTITIONS_SIZES, ODM_PARTITION_SIZE, PRODUCT_PARTITION_SIZE, SYSTEM_PARTITION_SIZE, VENDOR_PARTITION_SIZE with the values you obtained in step 7.

    Read lpmake docs for a more detailed expalation of the args used above:


    9. Compress the repacked super_new.img

    Code:
    lz4 -B6 --content-size super_new.img super_new.img.lz4

    10. Compress the clean vmbeta.img

    Code:
    lz4 -B6 --content-size vbmeta.img vbmeta.img.lz4

    11. Extract tar-md5-script-tool.zip

    12. Put all the *.img.lz4 files extracted from AP .tar.gz in tar-md5-script-tool dir

    13. Replace super.img.lz4 and vbmeta.img.lz4 in tar-md5-script-tool dir with your repacked and compressed super_new.img.lz4 (rename it to super.img.lz4) and the clean compressed vbmeta.img.lz4

    14. Run batch.bat in tar-md5-script-tool dir

    You will find the new AP .tar.md5 in the temp-folder subdir

    15. Flash your custom AP .tar.md5 with Odin along with BL, CP, CSC from original ROM

    16. Reboot into recovery and do a factory reset

    17. Done
    2
    Can we boot lineage-19.1 GSI (nogapps, no magisk ) on tab 7 lite ?
    if yes, please compile for test Thank you.
    Device: SM-T225 Regeion: THL
    Happy testing :)

    GSI: lineage-19.1-20220613-UNOFFICIAL-arm64_bvS-vndklite.img

    https://www.filehosting.org/file/details/8249475/GSI-Lineage-19.1_SM-T225_THL_T225XXU1AVB2.zip
    2
    i flashed this rom but after the factory reset on the recovery, the tablet freezes on the animated logo cherish os.
    maybe the problem is the base firmware ? i used the T220XXS1BVJ2 base firmware Android 12
    No, your base is not the problem. That particular version of A12 CherishOS uses PHH v415 which has issues booting for our devices. Only PHH v414 or v416 GSIs like this one boot for us (it works for VJ2 firmware, tested it myself). Sadly I don't see any other developer releasing an A12 v416 based GSI like the one I linked to so yes, that's what we have for now until the newer A13 GSIs pick up the v416 patches hopefully.
    2
    Successfully flashed GSI with magisk on my T220 following the OP's procedure. MTP is not working as the OP said. However, I can use my flash drive so I don't really miss MTP.

    I chose "system-squeak-arm64-ab-vndklite-gapps-secure.img.xz" for GSI. "Treble Info" app can tell you what image would be compatible with your device.

    If you want to use a different launcher like Nova instead of the default one, change the "Smallest width" setting from 600 to 598 in Developer options to hide the annoying taskbar.

    AOSP-Mods and "Project Themer - Android 12+" work fine for me.

    Here is my build for my device SM-T220 (SM-T220_EUX_T220XXU1AVE1):

    GSI: system-squeak-arm64-ab-vndklite-gapps-secure.img.xz
    Custom AP: https://www.filehosting.org/file/details/7045394/AP_TAR_MD5_CUSTOM_FILE_ODIN.tar.md5
    Custom AP with Magisk patch: https://www.filehosting.org/file/details/7045714/magisk_patched-25101_cauJQ.tar

    You can extract BL and Home_CSC from SM-T220_EUX_T220XXU1AVE1.

    Screenshot_20220624-113012.pngScreenshot_20220624-113035.pngScreenshot_20220624-113131.pngScreenshot_20220624-113205.png

    Notes: My device is actually SM-T220 XAR, but I have been updating it with SM-T220 EUX firmware versions without any issue.