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Forum: Pentax K-5 & K-5 II
07-26-2012, 10:00 AM
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It is confirmed it work fine...
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Forum: Pentax DSLR Discussion
07-23-2012, 01:47 AM
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Sorry, I tried to explain as best as possible, but not receiving any help, this post is a little dead.
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Forum: Pentax DSLR Discussion
07-19-2012, 09:23 AM
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***** Update firmware (cold) ***** For K-7 other models other names.
KB474.bin for DSP only (no encripted). KB474C.bin for CPU only (no encripted). KB474B.bin for both, DSP and CPU (no encripted).
Howto: put any file in SD card c:\ . with card tape open, the machine On or off it is equal. Insert the SD.Then remove the SDcard for updating. Note: can not use the extracted files with the command StoreCpu, StoreDSP of debug menu, because these files contain parts as kb474.adj, kb474cam.log, kb474cpu.adj ... and breaks the firmware check (it is possible to bypass). You can only use the original firmwares files are not modified.
***** Update firmware (hot) ***** For K-7 other models other names. This method you know it all, is the normal firmware update.
FWDC204D.bin for DSP only (encripted). FWDC204C.bin for CPU only (encripted). FWDC204B.bin for both, DSP and CPU (encripted).
Note: can not use the extracted files with the command StoreCpu, StoreDSP of debug menu, because these files contain parts as kb474.adj, kb474cam.log, kb474cpu.adj ... and breaks the firmware check (it is possible to bypass). You can only use the original firmwares files are not modified.
***** Bypassing the check of firmware in hot and cold update. *****
You only need modiffy the headers, DSP and CPU.
Example: This is the DSP header of firmware 1.12 of Pentax K-7
00000000 48 4F 4B 4B 54 4B 49 59 48 54 4E 54 4D 55 20 00 00 00 01 DA 00 01 2D B8 00 00 00 00 01 0C 16 1C HOKKTKIYHTNTMU Ú -¸
00000020 00 00 00 00 43 6F 70 79 72 69 67 68 74 20 28 43 29 20 48 4F 59 41 20 43 4F 52 50 4F 52 41 54 49 Copyright (C) HOYA CORPORATI
00000040 4F 4E 20 20 00 50 45 4E 54 41 58 20 4B 2D 37 00 56 65 72 73 69 6F 6E 20 31 2E 31 32 20 20 20 20 ON PENTAX K-7 Version 1.12
00000060 20 20 00 00 06 00 0A 17 00 DE 00 DF 50 45 4E 54 41 58 00 50 45 4E 54 41 58 00 4B 2D 37 00 44 53 Þ ßPENTAX PENTAX K-7 DS
00000080 43 5F 4B 2D 37 00 01 00 50 45 4E 54 58 00 49 4D 47 50 00 5F 49 47 50 00 50 45 4E 54 41 58 20 4B C_K-7 PENTX IMGP _IGP PENTAX K
000000A0 2D 37 00 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF -7 ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ
000000C0 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ
000000E0 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF 98 EA 26 3D ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ˜ê&=
The check of the firmware is the last 4 bytes, 98 EA 26 3D, only need to replace the 4 bytes per FF FF FF FF.
000000A0 2D 37 00 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF -7 ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ
000000C0 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ
000000E0 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ
I hope this discovery reactivate the hack of Pentax cameras.
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Forum: Pentax DSLR Discussion
07-18-2012, 07:48 AM
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Hello, I wanted to revive the forum with the intention to progress more in the Hack of the pentax.
All this came the need of a friend downgrade a firmware 1.13 to 1.12 In a Pentax K-5 by problems in focus with tungsten light.
I did some research with a Pentax K-7 and its firmware and discovered several things.
But the most important and which I think is the cause of the hack of the pentax has not been made possible, I have managed to introduce several ways firmware modified.
I'm pretty sure that works in K5, Kx and Kr as well, but I dare say that in older models K30 and also the future work.
I want people who have contributed much in this thread, as TR13, Das Boot, zezo, etc ... to renew their illusions. Publish their progress.
The first thing you would need is a good disassembly of any of these models (very similar).
I have Ida Pro 5.5, but my knowledge of assembler are rather poor and I can not get to disassemble the code well.
If I can today, will try to test this in a K-5.
I leave you a snapshot of a small text change in the firmware of a K7, which is the model that has left me a friend.
A great
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