I purchased because ConnectX-4 lx (MCX 4131A-GCAT) was cheap on eBay, but the Firmware seems to be broken, and DevID / VenID was PCI \ VEN_15B3 & DEV_020B.
This seems to mean Flash Recovery.
I tried to deal with the following site referring to it, but it does not work well.
mst status -v
mt523_pciconf0 bus: dev. fn = 22:00. 0
flint-nofs-use_image_ps-guid beeff 45214810ae0-mac f 45214810ae 0-use_fw-d mt523_pciconf0-i fw.bin burn
Current FW version on flash: N / A
New FW version: 14.25.1020
No checks will be performed. Burn process will not be failsafe.
If this process fails, computer may remain in an inoperable state.
Do you want to continue? (Y / n) [n]: y
-E- Burning FS3 image failed: Can not extract device data sections: invalid ITOC section. Please ignore device data sections.
Is there any way to handle it?