hello
I have os 7030 .v 4.7 work as slave cabinet to another os 7030 v 4.7.
the slave cabinet stop working , so I make upgrade using sio cable , and work good
then I do upgrade to main cabinet using DM , There is an icon update slave , i press that . then the slave one stop working , just ver 2.2 2003 4.30 on digital phone display
so I make upgrade another time ,
when I connect to the system using sio cable I receive the following
Resetting CPU
After that I couldn't connect again even using sio cable , any Suggestions may help to solve this issue

Upgrading a 7030 cabinet can take 20+ minutes to complete.

To recover the slave cabinet you'll need to remove the epm board so it does back to a main cabinet for the recovery then set the correct master/slave ip's turn both cabinets off, reconnect the epm board then power both cabinets back on.

I hate 2 cabinet 7030's. After bricking a couple using.the update slave I just stopped using it and just used the above procedure.

Yes I agree with you
what about Resetting CPU ,
and i can't connect using DM or SIO , is there Any chance to fix that ???

Have you powered it down for a while?
I have seen cabinets now work, then once being powered off for a while work for a bit then die again.

What do you get from the sio output?