I purchased a module that I encountered during startup. At first I programmed the module via the ST link v2.
Example: E: \ nRF5_SDK_11.0.0_89a8197 \ examples \ peripheral \ blinky \ pca10028 \ s130 \ arm5_no_packs
before programming, Bluetooth was not visible to other devices. After programming, it was not visible to other devices
How can I get the chip back to factory settings with ST Link v2?
Because I feel the memory of the layout is messed up