Attention.
I am Japanese. This document has been prepared using automatic translation.
This is the result of reverting from V22 to v19.
There are no results for recovery from V23.
Cosmo will be initialized.
I am not responsible for the result of the work.
What you need
A micro SD card with at least 5GB of free space
A PC with ADB connection
TWRP.
TWRP uses the following. I am not using TWRP provided by Planet.
https://www.oesf.org/forum/index.php?topic=35988.msg293552#msg293552https://github.com/Treeki/unofficial-twrp-cosmo/releasesAnother note
TWRP can only backup and restore the Data partition under v19.
If you restore other partitions, Cosmo Communicator do not boot.
1.
Download the file.
https://drive.google.com/file/d/1FHukLy_NNEYpGBq79xQhmTNwv1HNO4Jt/view?usp=sharingMD5 digest c14905bf510744f42e6194eaeeddf773
Unzip the downloaded file.
Create the \v19 folder on the Micro SD.
Store the 29 unziped files in the v19 folder. Be careful not to encrypt EFS.
Insert the micro SD into Cosmo.
2.
Start TWRP.
Select "Mount" from the TWRP menu
please mount "storage1"
Run adb shell from your PC and check the following
- The prompt is # (which means rooted)
- There are 29 files under /auto0-1/v19.
3.
Overwrite partitions with the v19 images.
Execute Command line by line from the adb shell.
dd if=/auto0-1/v19/boot.img of=/dev/block/mmcblk0p30 bs=4096
dd if=/auto0-1/v19/cam_vpu1.img of=/dev/block/mmcblk0p22 bs=4096
dd if=/auto0-1/v19/cam_vpu2.img of=/dev/block/mmcblk0p23 bs=4096
dd if=/auto0-1/v19/cam_vpu3.img of=/dev/block/mmcblk0p24 bs=4096
dd if=/auto0-1/v19/dtbo.img of=/dev/block/mmcblk0p32 bs=4096
dd if=/auto0-1/v19/expdb.img of=/dev/block/mmcblk0p4 bs=4096
dd if=/auto0-1/v19/frp.img of=/dev/block/mmcblk0p5 bs=4096
dd if=/auto0-1/v19/lk.img of=/dev/block/mmcblk0p28 bs=4096
dd if=/auto0-1/v19/lk2.img of=/dev/block/mmcblk0p29 bs=4096
dd if=/auto0-1/v19/md1dsp.img of=/dev/block/mmcblk0p16 bs=4096
dd if=/auto0-1/v19/md1img.img of=/dev/block/mmcblk0p15 bs=4096
dd if=/auto0-1/v19/metadata.img of=/dev/block/mmcblk0p8 bs=4096
dd if=/auto0-1/v19/nvcfg.img of=/dev/block/mmcblk0p6 bs=4096
dd if=/auto0-1/v19/nvdata.img of=/dev/block/mmcblk0p7 bs=4096
dd if=/auto0-1/v19/para.img of=/dev/block/mmcblk0p3 bs=4096
dd if=/auto0-1/v19/persist.img of=/dev/block/mmcblk0p12 bs=4096
dd if=/auto0-1/v19/protect1.img of=/dev/block/mmcblk0p9 bs=4096
dd if=/auto0-1/v19/protect2.img of=/dev/block/mmcblk0p10 bs=4096
dd if=/auto0-1/v19/recovery.img of=/dev/block/mmcblk0p2 bs=4096
dd if=/auto0-1/v19/scp1.img of=/dev/block/mmcblk0p18 bs=4096
dd if=/auto0-1/v19/scp2.img of=/dev/block/mmcblk0p19 bs=4096
dd if=/auto0-1/v19/seccfg.img of=/dev/block/mmcblk0p11 bs=4096
dd if=/auto0-1/v19/spmfw.img of=/dev/block/mmcblk0p17 bs=4096
dd if=/auto0-1/v19/sspm_1.img of=/dev/block/mmcblk0p20 bs=4096
dd if=/auto0-1/v19/sspm_2.img of=/dev/block/mmcblk0p21 bs=4096
dd if=/auto0-1/v19/system.img of=/dev/block/mmcblk0p36 bs=4096
dd if=/auto0-1/v19/tee1.img of=/dev/block/mmcblk0p33 bs=4096
dd if=/auto0-1/v19/tee2.img of=/dev/block/mmcblk0p34 bs=4096
dd if=/auto0-1/v19/vendor.img of=/dev/block/mmcblk0p35 bs=4096
sync
Finally, Sync.
4.
Reboot Cosmo Communicator.
It will take longer than usual; it should boot within 3 minutes.
"Decryption unsuccessful" will be displayed; select "RESET PHONE".
You may be asked for the screen lock password that you had set.
The system will initialize and boot normally.
5.
Clear Cashe.
Please reboot.
Select "RECOVERY boot"
ESC + VOLUP(behind the screen)
Select "Wipe cashe partition"
Reboot