Anyway I overclocked with the old firmware to 718 frequency.
I get this
ASIC STATUS
Chain 1 0000
Chain 2 X000
Chain 3 0000
I tried everything to restore to have all the chains working. A Perform Reset, a Restore Backup and recharge the new firmware but nothing that can work.
Seems under 650 all the Chains give me 0000 but is not worth. So like told previously at the moment NOTHING can be done to have all the Chains working with an HIGH FREQUENCY except that lower the frequency.
Otherwise the other miner give me all the Chains working with a 687 frequency.
It's a mistery really