Ok here is a little guide on how to downgrade your tmobile G2 firmwhere and Radio version. Its been tested and varified to work
This will wipe your phone
Although tested and really shouldn’t cause any damage I accept no responsibility for any damage caused by this. By doing this you are accepting all responsibility
What you will need
1) Download ROM and rename to PC10IMG.zip
2) Place on root of SD card //make shure to unmount usb storage after//
3) open up "ADB shell" and type SU to get # symbol
4) run
6) open the misc.img in the HeX editor
7) now edit the version line from somthing like
to
8) now save as miscnew.img
Here is what your miscnew.img should look like in HeX editor
9) copy miscnew.img to sdcard
10) unmount usb storage
11) in ADB shell run command
11) boot into hboot by holding down vol-dwn + power
13) the phone should then scan the .zip file and ask to flash
14) after flash you will be downgraded SW and Radio
To make this future proof just add the vesion that you want to downgrade too where we are putting "1.19.531.1".
This Can't in any way be used to gain permanant root
This will wipe your phone
Although tested and really shouldn’t cause any damage I accept no responsibility for any damage caused by this. By doing this you are accepting all responsibility
What you will need
- HeX editor
- G2 Temp Rooted
- ADB set up and working
- And this ROM || [MIRROR]
1) Download ROM and rename to PC10IMG.zip
2) Place on root of SD card //make shure to unmount usb storage after//
3) open up "ADB shell" and type SU to get # symbol
4) run
5) copy misc.img from the root of the sdcard to your computer //Copy So as to preserv a backup of misc.img on the SD card//
6) open the misc.img in the HeX editor
7) now edit the version line from somthing like
This will be whatever the version you are on currently
to
This can/will be whatever the version of the rom you are trying to downgrade too
8) now save as miscnew.img
Here is what your miscnew.img should look like in HeX editor
9) copy miscnew.img to sdcard
10) unmount usb storage
11) in ADB shell run command
12) power off phone
11) boot into hboot by holding down vol-dwn + power
13) the phone should then scan the .zip file and ask to flash
14) after flash you will be downgraded SW and Radio
To make this future proof just add the vesion that you want to downgrade too where we are putting "1.19.531.1".
This Can't in any way be used to gain permanant root
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