E90 dead after downgrade fix

[chimeto]

ello, I kill my nokia with USB with low version, I re-flash the phone with USB and version - 300.34.84, but the version installed on the phone was v400.
After that I try to repair the phone with MXkey with FIX DOWNGRADE solution but phone was dead totaly.
I erase the phone with many files, universal rapido, universal_rapido32mb , 256MB_RAPIDO_YAWE_erase_by_mm-gsm.256 and other and imei was 123456789?, and was detected only from MTbox and nothing more box.
After all this operations the phone was TOTALY DEAD!
In the end, after erasing I reflash the phone with v400 with HWK and after flash phone again was DEAD!
Flashing was 100% complete and don;t have any errors but phone only blink with nokia screen, I restore RPL backup before flashing because with full erased phone in HWK software give me error in flashing.
And Now ALL STEP IS DONE, erase, restore rpl, re-flash and phone again blink and show me only nokia and restart.
But Why now the phone can't be detected by any box? I have good cable, because before all it was detected on Fbus.


Thanck you