nrf51822 fail.txt TIMEOUT

[zer0c00l]

I recently purchased nrf51-DK. I was going through a getting started document which said to update the firmware on the board. After updating it the boards just keep disconnecting and reconnecting when connected through the USB, there is a fail.txt file in the root directory which simply says TIMEOUT. I used the latest .bin file

[zer0c00l]

I tried nRF5x-OB-JLink-IF file, and there is no fail.txt file now, it also does not disconnect and reconnect anymore but I don't know how to upload my code using Keil with JLINK file. I also tried nRF5x-OB-mbed-IF 0219. This also has the same behavior, fail.txt is created, and the board keeps disconnecting

[Ole Bauck]

With the nRF5x-OB-JLink-IF file you should be able to upload the code if you choose J-LINK / J-TRACE Cortex debugger under "Options for Target..."->Debug tab.