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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

Bricked devices #4

Open iam-TJ opened 7 years ago

iam-TJ commented 7 years ago

I've been doing some independent research and work with CSR8510-A10 devices and came across your project as part of that.

I wondered if you've ever experienced a device being bricked simply by putting it into HID mode - no pairing data added, simply setting "&03cd = 0002".

I note on the wiki it suggests devices with only 32K (NAND?) Flash memory may suffer this when switched to HID mode, but I'm not sure if that is due to missing the full stack or some other reason.

Do you know of a PSKEY that reports the size of installed Flash, EEPROM and RAM?

wmertens commented 7 years ago

Alas, I know of no such key. So far, the only way to know for sure is to write one of the higher addresses and then read it back, but even that makes me nervous…