TC297 HSM sectors are set exclusive to the HSM; how to revert?

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User21784
Level 1
Level 1
We have PROCONHSMCOTP configured as:
1. HSM17X  HSM Code Sector 17 Exclusive enabled
2. HSM16X  HSM Code Sector 16 Exclusive enabled
3. HSM6X  HSM Code Sector 6 Exclusive enabled
4. HSMDX  HSM Data Sectors Exclusive enabled
5. HSMBOOTEN  HSM Boot Enable (Expected) enabled

Therefore we cannot read HSM on the board with other hosts or debugger. Is there a way to modify these UCB options after this point?

Thanks
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1 Solution
NeMa_4793301
Level 6
Level 6
10 likes received 10 solutions authored 5 solutions authored
No, per page 954 of the User Manual. Once either set is confirmed, the UCB cannot be erased.

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NeMa_4793301
Level 6
Level 6
10 likes received 10 solutions authored 5 solutions authored
Is the UCB confirmed? If it is still unlocked, you can reprogram the UCB.
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User21784
Level 1
Level 1
It is confirmed. Is there any way to unlock at this phase?
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NeMa_4793301
Level 6
Level 6
10 likes received 10 solutions authored 5 solutions authored
No, per page 954 of the User Manual. Once either set is confirmed, the UCB cannot be erased.
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