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wmertens / textblade-dongler

Tools to convert a CSR8510 Bluetooth dongle to a pre-linked wireless USB keyboard
MIT License
36 stars 9 forks source link

`config 1 has no interface` #6

Open ClassicOldSong opened 5 years ago

ClassicOldSong commented 5 years ago

I managed to ues this method to pair a non textblade keyboard with a super cheap Chinese 32k rom dongle, it seems OK before unplugging from my computer, but upon replug it shows config 1 has no interface in dmesg, and I cannot change it back to HCI mode for no interface could be handled by libusb. Any idea on what's happing?

ClassicOldSong commented 5 years ago

Only setting initial boot mode would brick even more: the device could not even be recognized properly from the system. Load the dump from https://github.com/wmertens/textblade-dongler/blob/master/doc/virgin-dongle-output.txt could get the device half-work, not paring with the written key and have no interface for the OS to use.

I bricked 5 dongles just one night.....

wmertens commented 5 years ago

😢 I also bricked a few 32kB ones, AFAIK you really do need 64kB. The memory addresses it tries to write are in the 64kB range IIRC.

ClassicOldSong commented 5 years ago

So rom file actually not matters but only rom size matters? I'm communicating with a manufacturer to make some 64k cheap ones, but I'm not sure if their rom file is correct for 64k version. Also, 500pcs at least for customization and I don't think I need that much.....

wmertens commented 5 years ago

I actually don't know much about the internals, paging @awh-tokyo to see if he can help :)

awh-tokyo commented 5 years ago

CSR has a special version of the ROM that enables the HID Proxy mode, and that ROM won’t fit on a 32k EEPROM. I believe that CSR will provide it to any manufacturer that buys their chip, but so far only the ones from Laird, and a few consumer brands sold in Japan have that version of the ROM on them. Probably your manufacturer will need to contact the salesperson at CSR to get their hands on it.

Or they could get their hands on it be reading off a Laird dongle, but that would be software piracy and as such isn’t advisable.

ClassicOldSong commented 5 years ago

Okay I'll ask if they can provide such ROM. Also is there anyone who wants some cheap ones? If more people need this, I could be less hesitate on making 500pcs or not......