Today just got a couple of those PSUs and wasn't able to find any reliable info about them. Other DPS-1200FB part numbers (I do have several 748283-201 platinum PSUs) out there are platinum PSUs, but couldn't find anything about those. Anyone know anything about them? are they silent? silver...
Even if the motherboard is the same, the SBR etc will be different and when checked by it will give you error. Try to pm or ping the user who shared the files for the 2288, maybe he is able to download them
The BIOS you linked is the 5.21 and the one shared here is the 5.22, the BMC is also newer than the one you linked and you can download them from the shared links.
Don't understand why you're out of luck
Edit: ok, yours is a 1288, did you register an account at huawei's web?
I do have an sr130 in it mode (HBA) if you're interested, it is a 9300 8i huawei mezzanine card for huawei v3 servers
Since your backplane and cabling uses mini hd SAS connectors, I do recomend you a card that uses them (mostly SAS3, some SAS2 uses them too but is rare)