I am working on a custom board using MKW01Z128CHN.
There are few boards that I am unable to program using JLink (SWD mode)
All ICs are new from factory, assuming flash would be empty. Hence RST pin would toggle as in snapshot attached.
In some cases, as attached logs show, I am able to successfully unlock flash using jlink commander as well, but unable to ERASE flash.
Kindly share your thoughts...really appreciate any help.
Attached JLink commander Logs, and couple of snapshots (RST pin toggle & JFlash chip erase error)