How to remove CRP in JN5169

[thindcna]

I have a JN5169 kit. It is lock CRP level 1.

I tried to use JN51xxProgrammer.exe to write crp level0 but it return "Error:  one time programmable data has already been set in this device"

Can you help me handle this problem?

Thanks

[mario_castaneda]

Hi Phan,

What are the commands that you are using?

Remember the CRP Level 1 - Flash read protection

The contents of internal Flash memory cannot be read via the bootloader serial interface. However, the internal Flash memory can still be erased and written

Please look at the 3.4 Load Binary File, Verify Write and Erase EEPROM

JN51xx Production Flash Programmer User Guide

Regards,

Mario

[cyder_shot]

I have been occur this problem too,why should could not erase JN51xx internal eeprom?

Type the command:

JN51xxProgrammer.exe -s COM5 -P 115200 --eraseeeprom=full

the result response Code protection prevents...:

[mario_castaneda]

HI Behold Li,

Did you look at the 2.2.1 Verbosity (-V)?

Does the JN have some code protection? The device config.

Regards,

Mario

[cyder_shot]

yes，-v present code protection，is it means could not rease eeprom forever on chip lifetime？

[mario_castaneda]

Hi Behold,

CRP Level 1 - Flash read protection The contents of internal Flash memory cannot be read via the boot loader serial interface. However, the internal Flash memory can still be erased and written - see Table 8 for a complete list of all serial commands supported in this mode.

JN51xx Boot Loader Operation

Regards,

Mario