nrf51822-ble-tag

This repository contains firmware dump, app and description pdf for chineese BLE tag.

Problem: When you choose invalid settings from BLE_Sample app, you can 'brick' your BLE beacon.

I have a broken one. I get dump firmware from a good one and write it to broken.

You need any SWD programmer for repair.

Primary program util is nrfjprog, download it here: https://www.nordicsemi.com/Software-and-tools/Development-Tools/nRF-Command-Line-Tools

Read out code (make a backup):

nrfjprog --readcode backup_code.hex
nrfjprog --readqspi backup_qspi.hex 
nrfjprog --readram backup_ram.hex

Write working code (!!! Make sure you have full backup!):

nrfjprog --program good_code.hex --chiperase