Pairing info not saved and Update fail

RE: Pairing info not saved and Update fail

Nimster — Wed, 15 Jan 2020 11:40:36 GMT

Any info? Someone told me that after flashing NRF51 with ST-Link V2 ROM gets locked...is this true?

RE: Pairing info not saved and Update fail

Nimster — Tue, 14 Jan 2020 14:45:22 GMT

Hi Hung:

I'm trying to replicate what I did. I have a scooter that has this chip on it so I wanted to reprogram it I dumped the full bin 256kb. After that I programmed with a new file via STlink v2 using the OpenOCD, did a mass erase and everything went fine but the fw was buggy and I wanted to go back to stock, I flashed my original dump and everyhting was ok except. After I pair my scooter with the phone, I need to pair it everytime I shutdown the scooter (information does not get saved), cannot change the name of the scooter (device) it comes back to the default name, no longer can update via official app, downloads fine but the fw does not save...it seems almost like that the flash is write locked somehow. Tried to flash with Stlink and Jlink and with OpenOCD, Seeger and NRFStudio and the same problem appears. I only have the bin/hex files, dont have the code.

RE: Pairing info not saved and Update fail

Hung Bui — Tue, 14 Jan 2020 14:05:06 GMT

Hi Nimster,

Could you please state the SDK and softdevice you used on your board ?
When you flashed the original firmware, did you do a chip erase of your chip ? How did you get the original firmware, by compiling it or you also dump the flash out ?
By flashing other firmware on the board, the flash storage library may get confused if the previous firmware has put some garbage data into the storage area of the flash manager.