SB7890 no-link debugging

[noe]

Hi,
we inherited a couple of SB7890 switches, two of which seem to have problems getting any link, even when using the cables and partners of other
working SB7890. The firmware status of the two non-working switches is
unkown.
Is there a way to check if there is a functioning firmware on these switches and, if yes, check the version ?
Is there a way to update/reflash the firmware via I2C ?

Regards,
Norbert

[tengzil]

Hi, if none of the ports can come up with a known good cable, then there is no way to find out the FW or recover the switch. Also the switch has been End of Life.
If you still have a valid support contract, maybe you can try to contact the Nvidia Support.