2025-10-06 5:56 AM
Hi team,
I provisioned both OEM1 and OEM2 keys. I locked the device using OEM2 key and then put the device in RDP level 2 with the below commands:
STM32_Programmer_CLI.exe -c port=SWD mode=hotplug -lockRDP2 0xFEDCBA98 0x76543210
Response: "Lock RDP2 password successfully done"
Enable RDP2: STM32_Programmer_CLI.exe -c port=SWD mode=hotplug -ob RDP=0xCC
If you see here I used only <word1> and <word2> for password because I followed the below video for STM32U5:
URL: https://www.youtube.com/watch?v=B3l6iuA7U8Q&t=752s
But STM32U3 series uses 128 bits of password rather than 64 bits used by STM32U5 series.
Could anyone know/share default value that will be passed if we have missed <word3> and <word4>.
2025-10-06 9:20 AM
Hello @deva2k and welcome to the community;
Thank you for bringing this issue to our attention.
The expected behavior that a warning/error message should be displayed when you define two words.
The Bits[64:127] are written as zero so in reality OEM2KEY = 0xFEDCBA98 0x76543210 0X00000000 0X00000000.
I reported this issue internally.
Internal ticket number is reported : 195040 (This is an internal tracking number and is not accessible or usable by customers)
Thank you.
Kaouthar
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