Can I recover my dead MP4 player with a backup firmware

djandreski · #1 (**permalink**) 9th Mar 2009, 5:01 am

Hi all. I wanted to mod the firmware with s1res, so I made a healthy backup of my firmware, it's 9.1.52. In dead recovery guide it says that you can recover the player with the backup file. But I can't so somewhere i read that the recovery is made only with the original firmware. Now the problem is that I can't find firmware for my player, it is AK1025 bks25011-v3. So is there any hope to recover my player with the health firmware backup. Please guys help me.

lolita · #2 (**permalink**) 9th Mar 2009, 11:27 pm

What did you use to make the backup? s1fwx cannot extract version 9.x firmware.

djandreski · #3 (**permalink**) 11th Mar 2009, 1:18 am

So what was that "dump.bin" file that s1fw created on my desktop with size about 3MB.

lolita · #4 (**permalink**) 11th Mar 2009, 1:38 am

Upload it for inspection. It's probably a piece of the firmware, the part that s1fwx can read. A full v9 firmware for color display player is around 9MB.

djandreski · #5 (**permalink**) 13th Mar 2009, 12:34 am

Hi here are some files that I've extracted from my MP4 player, I'll be very grateful if you can inspect these files and determine whether some of the files is the full firmware.

Extracted file with s1fw: dump.bin
Extracted file with s1res: QUART-M-450_ORG_BACK.FW
The modded firmware that killed my MP4 player: QUART-M-450_MODED.FW :cry:

lolita · #6 (**permalink**) 13th Mar 2009, 2:11 am

dump.bin contains BRECF285.BIN and FWIMAGE.FW.

Code:

amy@box14:~$ fwx l misc/mpx/dump.bin
BRECF285BIN     00001000        00004000
FWIMAGE FW      00005000        00600000

-- BRECF285.BIN seems to be a valid boot record. I haven't validated the checksum though.
-- FWIMAGE.FW is 6MB of zeros.

Code:

amy@box14:~$ fwx l misc/mpx/QUART-M-450_ORG_BACK.FW
BRECF285BIN     00001000        00004000
FWSCF285BIN     00000000        00000000
ADFUS   BIN     00270600        00002400
HWSCAN  BIN     00000000        00000000
FWIMAGE FW      00005000        00854a00

It seems you're missing FWSCF285.BIN and HWSCAN.BIN, both entries have 0 offset and 0 size. FWIMAGE.FW appears to be valid though.

The same situation occurs with QUART-M-450_MODED.FW

Code:

amy@box14:~$ fwx l misc/mpx/QUART-M-450_MODED.FW
BRECF285BIN     00001000        00004000
FWSCF285BIN     00000000        00000000
ADFUS   BIN     00270600        00002400
HWSCAN  BIN     00000000        00000000
FWIMAGE FW      00005000        00854a00

Also, what version of s1res are you using?

Quote:

v3.6
important bugfix: firmware import produced invalid-brec

This may be the cause of your problem. If the BREC is invalid, the BROM will not try to run it but go into ADFU mode immediately.

djandreski · #7 (**permalink**) 13th Mar 2009, 2:41 am

WOW WOW :shock:
What all this means?
Is there any hope for my player or not?
If there is what should I do?

P.S. Thanks lolita for all your effort.

lolita · #8 (**permalink**) 13th Mar 2009, 2:46 am

Please do some reading at http://s1mp3.org/ and http://wiki.s1mp3.org/

You will find more information about the devices there.

djandreski · #9 (**permalink**) 22nd Mar 2009, 8:32 am

So can you modify some of the posted firmwares to be valid and work with my MP4 player or at least can you find the original firmware based on these posted backups. Isn't there anything you can do about it. Please.

UPDATE:
Ok I had some progress with this player. I've installed bks25018 instead of my original bks25011 firmware. Now, when player boots up I can, finally, see the sand clock. But after the boot up there is undefined, little picture, on the same rectangle where the sand clock appeared. When I press the buttons left or right the little picture is changing. So I think that this player now can play mp3 songs, but i cant see what is happening on the screen. Is there any hope?

lolita · #10 (**permalink**) 22nd Mar 2009, 8:20 pm

What is the part number of the display?