AnsweredAssumed Answered

How to solve error "readout protection is set and mass erase is disabled" and to use board for debugging purpose.

Question asked by isharat mahmood on Jan 21, 2019
Latest reply on Feb 10, 2020 by Kishor Vaidya


I recently purchased FRDM-K82F Board.

I downloaded all software from the official website along with the drivers and make necessary setup in windows 10 PC.

My config. is as follows:

PC Config : Windows 10 x64

IDE : MCUXpresso IDE v10.3.0_2200

SDK : SDK_2.5.0_FRDM-K82F

Debugger : J-LINK SWD Debugger (without any external Hardware)

From the examples, i used LED_Blinky example and successfully ran LED Blinky program in Board.

Now, from next time whenever i try to debug the same example without any modification, It is showing following error.

Error :

Kinetis (connect) protection byte in flashat addr. 0x400 - 0x40F indicate that readout protection is set and mass erase is disabled.J-Link can not unprotect the device. Can not connect to the target.


Please, provide the solution. I want to unprotect my FRDM-K82F Board and want to use it for different applications. Provide a way to use it.readout protection is set and mass erase is disabled