Mischka... one question

[Alpha43]

Im going to see if we can convert those .img files to CG.. Or maybe convert them another filetype to finally convert them to shx. Woudl this phone take shx? or just sbf?

~Alpha~

[bOOster]

There is no way to rebuild original shx from backuped firmware:
becouse
There is two processors:

1. AP (Application processor) - Intel Xscale PXA 270 - this is a heart of Linux system and other things connected to user.
When we make backup - we back up only AP part
But there is another thing:
2. BP (GSM stack processor) - it does GSM, GPRS, works with CG1 part from firmware. in original firmware this part available but we CANNOT extract this part from phone and this part is RSA signed and hardlinked with bootloader. if we change something in CG1 - bootloader rejects load program to BP and phone won's load AP part.. Phone is dead and needs reflash with original firmware.
Some A1200i have new bootloader such as 24P firware and don't know about old firmware RSA - and wont's downgrade to previous version of firmware and

But! thereis a turnaround - Vilko from motofan.ru HACKs bootloader from E680i phone model and now we can put in E680 CG1 from A780 with EDGE support!!! Trying this now.
Sometimes later i think we make clear bootloader without RSA sign for A1200 and then we can downgrade not only from 24P firmware - we can make work new A1200i with old firmwares.. I think.

[Pondo]

Yes A1200 firmware is a complicated beast, maybe we can get our hands on the new generic firmware thru Moto Service.

[mischka]

There is no way to rebuild original shx from backuped firmware:
becouse
There is two processors:

1. AP (Application processor) - Intel Xscale PXA 270 - this is a heart of Linux system and other things connected to user.
When we make backup - we back up only AP part
But there is another thing:
2. BP (GSM stack processor) - it does GSM, GPRS, works with CG1 part from firmware. in original firmware this part available but we CANNOT extract this part from phone and this part is RSA signed and hardlinked with bootloader. if we change something in CG1 - bootloader rejects load program to BP and phone won's load AP part.. Phone is dead and needs reflash with original firmware.
Some A1200i have new bootloader such as 24P firware and don't know about old firmware RSA - and wont's downgrade to previous version of firmware and

But! thereis a turnaround - Vilko from motofan.ru HACKs bootloader from E680i phone model and now we can put in E680 CG1 from A780 with EDGE support!!! Trying this now.
Sometimes later i think we make clear bootloader without RSA sign for A1200 and then we can downgrade not only from 24P firmware - we can make work new A1200i with old firmwares.. I think.

bOOster, so it is CG1 that changes bootloader and this is the reason why after flashing 24p no other flash is possble.

Could it be possible to change CG1 in 24p fw to CG 1 from other fw (maybe split CG41 if necessary) and then flash this modded 24p without changing bootloader? If yes it might be possible to flash other fw after that.

Or would it just not work and the old bootloader cannot flash 24p?

[michalack]

Maybe this tool helps a lot! this tool can decompile a SBF file into CG´s and then decompile those CG´s

[Pondo]

Can it read and extract firmware?

[mischka]

Can it read and extract firmware?

Not really, but it can:

-extrct CG files from sbf file
-replace, remove, add CGs
-recompile CG files to sbf flashfile
-open cramfs CGs (but not rebuild to cramfs)

Very usefull tool but we need to modify CG files too and we need to take care of dependencies between CG files.