How can I disable RDP2?
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‎2022-11-07 2:05 AM
Hi, I was testing the different levels of read protection and when I activated RDP 2, I lost full access to my board. I would like to know if there is any way to regain access (do a downgrade), despite losing all the content I had installed, something like a hard reset, ...
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‎2022-11-07 2:41 AM
Welcome, @Alfonso Gómez MartÃnez​, to the community!
RDP2 is unfortunately (or fortunately) a one-way street, which is also described in the reference manuals, e.g.:
When the read protection Level 2 is set:
- All protections provided by Level 1 are active.
- Booting from RAM or system memory bootloader is no more allowed.
- JTAG, SWV (single-wire viewer), ETM, and boundary scan are disabled.
- User option bytes can no longer be changed.
- When booting from Flash memory, accesses (read, erase and program) to Flash memory from user code are allowed.
Memory read protection Level 2 is an irreversible operation. When Level 2 is activated, the level of protection cannot be decreased to Level 0 or Level 1.
It looks like you have just bricked the device.
Regards
/Peter
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‎2022-11-07 2:41 AM
Welcome, @Alfonso Gómez MartÃnez​, to the community!
RDP2 is unfortunately (or fortunately) a one-way street, which is also described in the reference manuals, e.g.:
When the read protection Level 2 is set:
- All protections provided by Level 1 are active.
- Booting from RAM or system memory bootloader is no more allowed.
- JTAG, SWV (single-wire viewer), ETM, and boundary scan are disabled.
- User option bytes can no longer be changed.
- When booting from Flash memory, accesses (read, erase and program) to Flash memory from user code are allowed.
Memory read protection Level 2 is an irreversible operation. When Level 2 is activated, the level of protection cannot be decreased to Level 0 or Level 1.
It looks like you have just bricked the device.
Regards
/Peter
