OBi 100/110 GV Update request
talkbot:
Yes it would take basically no effort assuming they didn't completely abandon their dev tools for obi1xx (unless it is more than a simple certificate change). But as a business decision it is a tradeoff between new revenue and goodwill and most people would choose new revenue.
So let's figure out how to patch the firmware with the new certificate ourselves. Anybody has unpacked the firmware filesystem? Binwalk does not seem to recognize any compressed filesystems or kernel images in either the firmware update file or a raw flash dump.
If the firmware update has to be signed it should still be possible to modify the flash chip contents directly with an arduino or SPI programmer device which some people have laying around.
talkbot:
So I guess this is a MIPS-X device and not running linux. But the firmware update file is more or less copied directly to the flash with the first part being the webpages at 0x80000 and the second part the firmware which is aligned with the end of the flash. There seem to be some tables and headers and multiple compressed sections. So it should be feasible with a little effort to find the sections and decompress them, find the certificate and replace it, and then pack it all back up again. Anybody else looking at this?
SteveInWA:
Discussions of firmware cracking will be cheerfully deleted.
Remember: this forum is owned and operated by Obihai, who will frown upon people discussing cracking their firmware.
Just buy a new OBi or use the Simonics GVGW and get on with your life.
talkbot:
Remember that we own the devices and they are discontinued. Firmware mods are not cracking. And nothing other than information is being distributed.
Of course maybe this is not the best place to discuss it so anyone may suggest an alternative venue and the owners are free to delete any content they want but maybe let's just live and let live.
Rescuing old/obsolete electronics is a fun hobby for some and e-waste via firmware obsolencence is sad so feel free to participate or not.
I plan to get my asterisk pogoplug setup back running if I can't revive the obi and have already instituted workarounds in the meanwhile. So this is mostly just for the fun challenge.
WelshPaul:
This will happen again with the OBi2xx series ATA's and OBi1000 series IP phones at some point. It's likely that the OBi1000 series IP phones will be marked as EOL soon considering that the OBi2000 series IP phones have been made available.
Remember, everything has a shelf life. All ATA's have an EOL and all stop receiving firmware updates at some point regardless of the manufacturer. Even if OBIHAI allowed users to upload certs via the GUI there is no guarantee that GV wouldn't implement other changes that would render an OBi device unusable at some point.
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