Has anyone successfully got ECC Injection detected and corrected on AM4?

[watchDominion]

I'm waiting for my PRO CPU to arrive to complete the 2nd half of my testing. Currently using non-PRO CPUs with different boards.

I'm able to get the ECC Injection working, there's even a BIOS setting in the Asus PRIME X370-PRO board that says "Disable Memory Error Injection" and it's on TRUE by default. I set it to False and there's no longer warnings in memtest about it being disabled. However, still no ECC Errors detected messages.

On an Asrock B550M PRO SE board, there's no options whatsoever. However, I do see a message pop up about [ECC Errors], but not [ECC Errors Detected]; this is different from the Asus board. The summary in HTML report shows the full message of the ECC Error and it says "Corrected: No". I'm guessing this means ECC isn't working despite the initial startup/configuration page saying ECC is enabled.

Regardless, several posts mentioned ECC is just all over the place with retail AMD CPUs. These boards both claim to be ECC functional with PRO CPUs, so once my CPU arrives, I'll do the same testing and see if the injected errors are corrected.

[David (PassMark)]

several posts mentioned ECC is just all over the place

Correct. It is all a bit of a mess.

CPU needs to support it. Motherboard needs to support it. BIOS needs to be support it. RAM needs to support it.
Then there is different levels of support and different types of ECC. ECC active for corrections, but reporting & monitoring doesn't work. Injection might or might not work depending on BIOS and the CPU. We have been documenting details here
https://www.memtest86.com/ecc.htm

ECC Error and it says "Corrected: No"

If ECC was active, then this might mean the ECC detected was 2 bits.
ECC corrects 1 bad bit and reports, but doesn't correct, 2 bad bits.