Rockbox Development > New Ports
Creative Zen Vision:M
Hoffmann:
Sorry BigBambi, I messed it up, you are right...
Next meeting should be at a date that is easier for europeans and still atendable for americans.
mcuelenaere:
Hi there,
I saw that you're looking for some older firmwares of the ZVM (+ extracted nk.bin); well there are some at http://epizenter.net/e107_plugins/forum/forum_viewtopic.php?69697.105#post_74257, even some older ones (but without nk.bin extracted) if you look further into the thread...
I've also extracted the separate data blocks of the newest firmware, so the data is more or less separated from the binaries (there are some FBOOT and FRESC blocks; also an encrypted one), but a quick scan with IDA shows me no useful info (although, I'll have to tell, I'm not an assembler/hex expert, I have no experience whatsoever).
I'll post the .rar file with the blocks somewhat later, first I have to upload it :)
Edit:
http://rapidshare.com/files/19190349/ZVM.rar.html
koston:
Ive looked through the firmware updater a several times but i can't find any CRC or other Checksum Check and i don't believe that is decrypted. Ive tried to debug the updating process but Olly doesn't brake when i press the update button and i don't know why.
Otaku:
Its entirely possible any crc validation/decryption is done on the unit itself. All the PC software would need to be aware of is the return code.
O.
saratoga:
The check is likely done by the bootloader. It wouldn't make sense to hand control over to the software unit and then do a checksum. Though it'd be nice if they did that, since then we wouldn't have to do anything other then delete the original firmware!
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