Thanks for your quick response. I have tried readrange and save, and saveas. Unfortunately they don't work. I got all 0xFF from that range. j-link works very well though. I MCU is TI CC2538. The address is not in the flash section. Is it the reason that j-flash won't work?
We need to read the device memory as MAC address and generate public signature based on it. It is easy to do with j-link. savebin mac.bin, 0x00280028, 8 I am aware of the fact that segger strongly discourages using j-link in production. Although frankly I am not at all convinced by the reasons I am willing to follow the rule to use j-flash instead. So please instruct me how to do it in j-flash. Thanks a lot.