Hi to all,

Iphone Details: 3GS with new Bootrom Firmware 3.1.2 Baseband 5.11.07
Week Number: 50
Jailbroken/Unlocked : Blackra1n
No SHSH on File!
Recent State: Stuck and Loop in Recovery Mode!
-> Restoring only with 3.1.3 possible!
Solution IDEA for the new iphone 3GS for Unlocking

Would it be possible to prevent the baseband update with a hardware lock?
Perhaphs with a simple short to ground of two Pins of the PMB8878-Chip (or the flash-chip, dont know exact hardware)?
If yes would the restoring process abort or continue ignoring the basband update error?

What do you think?
Regards
Drhackstable

the first time with blackra1n, there is the pic of blackra1n on the screen of the iphone. Whan i start blackra1n the second time it says waiting ... . after about one minute the iphone restarts and there is the recovery mode again and then again the pic of blackra1n, then again about one minute and the iphone restarts and is again in recovery mode, that could be continued in an infitiv loop, nothing changes.

Hi futurerulz,
I have the same Iphone details and the same problem as you. (only difference, my reboot was caused because of resetting network settings). I tried the same methods as you, without succes.
The first informations of my iphone in irecovery is as folowing:

[FTL:MSG] Apple NAND Driver (AND) RO
[NAND] Found Chip ID 0x ... 4 lines ...
[FTL:MSG] FIL_Init [OK]
[FTL:MSG] BUF_Init [OK]
[FTL:MSG] FPart Init [OK]
read new style signature 0x43313133 (line:375)
[FTL:MSG] VSVFL Register [OK]
[FTL:MSG] VFL Init [OK]
[FTL:MSG] VFL_Open [OK]
[FTL:MSG] YAFTL Register [OK]
yaFTL::YAFTL_Open(l:2630): CXT is not valid . Performing full NAND R/O restore .
..
[FTL:MSG] FTL_Open [OK]
Boot Failure Count: 15 Panic Fail Cont: 0
Delaying boot for 0 seconds. Hit enter to break into the command prompt...
HFSInitPartition: 0x4fc2ed00
Kernelcache image not valid
Entering recovery mode, starting command prompt

With redsn0w, i can Install CYDIA without problems (i can see installing logos etc on screen). But after finishing i am again in recovery mode.
Then i have folowing result in irecovery:
[FTL:MSG] Apple NAND Driver (AND) RO
[NAND] Found Chip ID 0x... 4 lines ...
[FTL:MSG] FIL_Init [OK]
[FTL:MSG] BUF_Init [OK]
[FTL:MSG] FPart Init [OK]
read new style signature 0x43313133 (line:375)
[FTL:MSG] VSVFL Register [OK]
[FTL:MSG] VFL Init [OK]
[FTL:MSG] VFL_Open [OK]
[FTL:MSG] YAFTL Register [OK]
[FTL:MSG] FTL_Open [OK]
Boot Failure Count: 15 Panic Fail Count: 0
Delaying boot for 0 seconds. Hit enter to break into the command prompt...
HSInitPartition: 0x4ff932c0
Kernelcache image not valid
Entering recovery mode, starting command prompt

The message is "yaFTL::YAFTL_Open(l:2630):" is gone, but if i do blackra1n after that, i have the same result as the first.

Other tries in irecovery:
(Recovery) iPhone$ bootx
Attempting to validate kernelcache @ 0x41000000
(Recovery) iPhone$ go
Kernelcache image not valid
error loading kernelcache
(Recovery) iPhone$ tsys
Memory image not valid

Perhaps we or someone can found something, if you also write your informations by irecovery.
In my case there seems a problem with the kernelcache image, perhaps there is a way to restore it without restoring the complete firmware?