CX6 firmware version problem

Hallo,I am testing CX6 and CX7 RoCE card, mlx5_core driver is complierd from linux-6.6.1.

I find that the corresponding firmware version for linux-6.6.1 is 28.38.1002 for CX7 and 20.38.1002 for CX6. But the download page said 28.38.1002 for CX7 is not recommanded(in fact I can’t download this. Is there also a critical issue in 20.38.1002 for CX6 and I need to use 20.39.1002 for my CX6 card?

Could you please give me some advice about this two RoCE card. Thanks a lot.

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