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Unbricking the Cowon V5: SDCFG value for TCCtool needed

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dfkt:
Can someone help me find out the SDCFG value for unbricking the Cowon V5 with TCCtool? I bricked the V5 for good, nothing to do with it anymore. Unfortunately I have no idea how to find out the correct SDCFG value, I just collected all the info that might be helpful. Any help would be highly appreciated.

I assume another issue would be that the 32MB firmware file is too big for TCCtool to transfer onto the device. Would there be a workaround for that?

Here's an informative thread about the endeavors to get TCCtool working with the Cowon S9/J3: http://iaudiophile.net/forums/showthread.php?t=36073

Especially Joeyg's posts are very helpful, like this: http://iaudiophile.net/forums/showpost.php?p=293926&postcount=59



Here's all the info I collected:

Cowon V5 PCB layout photo: http://i45.tinypic.com/wu2eqc.jpg

Cowon V5 1.12_ENG firmware: http://www.cowonglobal.com/zeroboard/zboard.php?id=C08&no=415

+++++++++++++++++++++++++++++++++++++++++++

Telechips TCC9101 (ARM1176JZF-S - TCC91XX) - http://www.mp4nation.net/forum/viewtopic.php?f=20&t=16030

VID 140E / PID B077

"TCC91xx usb-boot mode"=LIBUSB_DEV, USB\VID_140E&PID_B077

+++++++++++++++++++++++++++++++++++++++++++

Memory: Samsung 007 K4T1G164QE-HCE6 ( GWA028GKN / GWL659JGS ) - http://www.samsung.com/global/business/semiconductor/productInfo.do?fmly_id=696&partnum=K4T1G164QE&xFmly_id=

Data sheet: http://www.samsung.com/global/system/business/semiconductor/product/2010/3/24/691229ds_k4t1gxx4qe_rev111.pdf

Device Operation & Timing Diagram: http://www.samsung.com/global/system/business/semiconductor/product/2010/1/20/741738ddr2_device_operation_timing_diagram_may_07.pdf

+++++++++++++++++++++++++++++++++++++++++++

Memory: Shows up as 166636 KB RAM in Windows CE Task Manager

saratoga:
Do you have the TCC datasheets?  IIRC they explain what the register does.

dfkt:
No, I didn't find anything about the TCC91xx, but the MP4Nation link above contains a link to the newer TCC89xx datasheets. Here's a direct link to a working torrent if that's any help: http://www.torrenthound.com/hash/f21b0242eac7f91090eaa949c699d2bc9252ca85/torrent-info/Telechips-TCC89XX-Datasheets-%2B-sources - not sure how legal that is, please delete the link in case.

These iAudiophile post have some info about the TCC79xx: http://iaudiophile.net/forums/showpost.php?p=289582&postcount=17 and http://iaudiophile.net/forums/showpost.php?p=293926&postcount=59

saratoga:
Unfortunately I don't see a datasheet for the TCC chip in there, but I think that register probably doesn't change much from the slightly older TCC chips.  I looked at the 8200 datasheet, and it looks like the main bits that change are just the total memory size and maybe the total base address.  Is there an SDCFG value known for a 32MB player?  Maybe try that.

dfkt:
You mean a player with 32MB big firmware? No, I'm not aware of any SDCFG known - also, the Korean firmware is even bigger than the international one (~62MB). Furthermore, TCCtool refuses to upload such big firmwares.  I assume in tcctool.c one has to remove or alter the safety check:


--- Code: ---#define MAX_FIRMWARESIZE   (10*1024*1024)   /* Arbitrary limit (for safety) */

--- End code ---

As far as I know, a big part of that 32MB firmware is some Windows CE 6 bloat - other Cowon TCC players run on some more specific embedded systems. Most other Cowon TCC firmwares come in 3-part binaries (format.bin, firmware.bin, resources/fonts.bin), not in one monolithic file. And those parts are usually around 1-8MB sizes.

Is there a way to reverse-engineer the V5 firmware, or any other way to look around in it, which might reveal something about the right SDCFG?

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