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OTP Programming: STM32F4 with ST-Link

Question asked by kai.paulus on Jul 25, 2016
Latest reply on Aug 10, 2016 by FTITI.Walid
Hi all,

i have an problem with the OTP Programming. I use an STM32F429 and ST-Link/V2 with the Software STM32 ST-Link Utility V3.9.0. 
The OTP Bytes started at 0x1FF0F000. I see the content of this Bytes (0xFF) with blue background color. I try to change one of the Bytes in 0x7F. But it doesnt't work. I become the following error message:


Are there any ideas for my problem?

Best regards
Kai Paulus