Thanks for the heads up. I am still using the June build for that excellent module but I couple it with JamesDSP using the Zumreed Sfit Viper-DDC profile. Sounds way better than stock, that's for sure.
Attachments
!! CUSTOM AP firmware for install GSI.
I have founded KG 'Broken' status after Odin fashing with Home_CSC although uninstall Magisk before.
[ try to update without lost data ]
May be try to build TWRP for A12.
No idea why it bootloops. Maybe some incompatible changes were made in that build but it doesn't boot on my T220.
can someone compile Pixel Experience 12.1 for Tab A7 Lite Sm-T220 T220XXU1AVE1 with magisk region canada csc T220OXM1AVE1
Android 12 firmware is available for your region. I am no longer building using A11 firmware for A12 GSIs due to some important features like MTP (USB connection) not working when using A11 firmware as the base.
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12DDeleted member 12168841Hi 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://xdaforums.com/t/guide-custo...sing-odin-without-twrp-phh-lineageos.4114435/
- https://xdaforums.com/t/editing-system-img-inside-super-img-and-flashing-our-modifications.4196625/
Requirements
- Unlocked bootloader
If you haven't done this already follow the steps in parts 1-2 from:
[TUTORIAL] How To Unlock & Root Tab A7 Lite T220/T225, & Install LSPosed, Magisk, Mods
While some of these instructions are copied...
xdaforums.com
- Latest official ROM
I used T220XXU1AVE1 for EUX region
Samsung Galaxy Tab A7 Lite Firmware Download SM-T220 Free Download
Samsung Galaxy Tab A7 Lite Firmware Download...samfw.com
- Download your preferred GSI
I used AOSP 12.1 v414 with gapps from phhusson
Releases · phhusson/treble_experimentations
Notes about tinkering with Android Project...
github.com
- 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. Done2
Here is GSI build for SM-T225_INS_T225XXU1AVB2
https://www.filehosting.org/file/details/7129248/GSI-12_SM-T225_INS_T225XXU1AVB2.zip2
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
