Lost access to the switch, how to connect to it (HP Gbe2c Layer 2/3)?

Question

network hardware

I tried to configure the Radius server, added the IP address of the same subnet as the server on the switch, registered the server address on the switch, set a secret, and then lost access to it.
I added a client, indicating the IP of the switch, but the server does not see it and does not ping to the address in the same subnet.
The switch itself works, other interfaces and routes work.
How to reset to factory settings when there is no null modem cable?

Answer 1

Without a zero, you got ... Did you look for information on this issue in a foreign country? Is the unit still on support? Although, in theory, if you arrange an emergency situation, shouldn’t he throw an echo to the provider about the connection? (Although maybe I confuse it with another unit ...)

Answer 2

All dropped.
Null modem cable for 200 rubles replaced 3 days of dancing with a tambourine.