hola, mira estoy tratando de reparar el z520 y no lo puedo revivir con sonics, me salen los siguientes errores,si alguien sabe otro metodo gratis para resucitarlo:

Lante Sonics is Ready..
Device ready.
TRY TO RECOVER PHONE NOW...
Powering phone...
Speed: 921600 bps
timeout when waiting for booter's answer.
No answer from phone.
Powering phone...


setool2

GUI v0.91373/UNI
standalone version engaged.
Card serial:00001283
Loaded 49 flash descriptors
file can't be found or opened
Elapsed:0 secs.
file can't be found or opened
Elapsed:0 secs.
Open COM port OK
ChipID:8040,EMP protocol:0301
PHONE IS INVISIBLE (00000000)
NO valid FLASH CID detected (00)
Cowardly refusing to load empty loader.
failed to load CERTLOADERS,try to use RECOVERY.
Elapsed:8 secs.
RECOVERY MODE STARTED
Open COM port OK