Hi J4bberwock

Thanks for your procedure! I stepped succesfully trough it, only after the programming and verify succesfull, I powertoggled the device, removed the serial and boot stuff and connected it to USB again but still get the device not recognized warning, there are no leds on.

any thoughts?
is it possible that Gridseed protected the devices, so the binary is encoded and not poratble?

When the RDP (read protection) option is active, the only command that is allowed is the "Permanent Readout Unprotect" command (which erases all of the Flash).
So while the protection is enabled, it should not be possible to download programs to RAM and run them


edit: found the answer to the protection question

I was able to solder a new chip and found that the 8pin single row pin header is the programming connector

1. 3v3
2. Reset
3. RX
4. TX
5. Boot0
6. Boot1
7. GND
8. GND

i'l share the boot pin settings this evening

Did you manage to get your blade up and running again? can you share the compiled firmware file?