Hi!



I try to unsecure / erase on a chip already programmed and secured (STM32F103RCT6). I have the J-FLASH ARM license. When I execute "UNSECURE" command, I got the following message from the application: "Chip unsecured successfully - Completed after 1.782 sec".



After, when I try to execute "ERASE CHIP" command, I got the following message from the application: "Failed to erase chip (erase error)". My chip is always secure, even after the "UNSECURE" command...



If I want to erase my chip memory, I have to execute the JLINKSTM32.EXE program before, since "UNSECURE" command doesn't work at all!



Do I make something wrong using JFLASHARM.EXE program???



___________________________________________________________________



Secondo, I want to write an automated sequence (batch file) for production process to program our onboard chip. When starting, the application secure the chip memory, so if I want to reprogram the chip I have to unsecure it. My batch file work fine if I call the "JLINKSTM32.EXE" programm before erasing sequence. But user has to click on "OK" button to start programm, then press a key to continue the sequence... I don't want any user interaction during programming sequence...



If I try the execute the following in my batch file "JFLASHARM.EXE -unsecure -exit", GUI returns "UNSECURE" function is not a valid command!!!



In both case, unsecure command does not work!!!



Is it a bug when calling "JFLASHARM.EXE" with "-unsecure" command option????



Thank for your help

Hi Alex!



I'm using JFlashARM included in JLinkARM_V410i (J-FLASH ARM V4.10i, compiled 14:44:49 on Jan 25 2010). I think it's the latest version available on your site.



After unsecuring, yes I'm able to read the entire chip chip memory, but unable to erase it!!!



I read in documentation that unsecuring a chip cause a mass erase of the chip. Is that exact?? Because it's not what I see with my board!! If I want to erase a secured chip, I have to execute JLinkSTM32.exe program...



Thanks



Sylvain