One Year later, but... Help incoming!
Ok, i have the same problem. A dirt cheap ConnectX-2 from ebay, that is retired from a working HPe computer. The PSID was the same as you (HP_0F60000010) and the firmware was 2.9.1200 that is not RDMA capable.
I downloaded the mlx firmware, and change the PSID (MT_0F60110010 => HP_0F60000010)on the INI to generate a working firmware for my cards, and then, burn the firmware. worked like a charm after two reboots (the OS has to recognize the 'new' card). Then, install the WINOF 5.40 drivers, and reports the ConnectX-2 cards with the new (2.10.720) firmware and RDMA Capable.
In my case, as I am working with a Hyper-V internal Switch in a hyperconverged cluster (S2D & HyperV hosts), I must enable 'networkdirect' in the HyperV virtual ethernet device in Device Manager. After that, the cmdlet Get-SmbServerNetworkInterface reports RDMA capable.
PS C:\Users\Administrator.<edited>> Get-SmbServerNetworkInterface
Scope Name Interface Index RSS Capable RDMA Capable Speed IpAddress
---------- --------------- ----------- ------------ ----- ---------
* 4 True True 10 Gbps fe80::6866:5820:52c8:8ef3
* 4 True True 10 Gbps 192.168.5.14
This is my package to upgrade the firmware to the cheap dirt HP Branded Mellanox ConnectX-2 (HP_0F60000010) on ebay.
MEGA
Execute the BAT on the directory (or edit it, to view the commands), and install WINOF 5.40 included in the package (or download from oficial mellanox website, o whatever you need for your OS)