Error code 37 E3372H

[Kehai]

Hello, i just made an account and bought credit to unlock my E3372H but i end up with that error everytime i try : Error code 37
DC - Unlocker 2 Client 1.00.1381

Detecting modem :

selection :
manufacturer - Huawei modems
model - Auto detect (recommended)

Found Applications port COM9

Found modem : E3372H
Model : Huawei E3372h
IMEI : 868757028354633
Serial NR. : G4PDW15C04000811
Firmware : 21.200.07.03.314
Compile date / time : Oct 26 2015 14:00:15
Hardware ver. : CL2E3372HM
Dashboard version : Meditel_Win4.0.6.2_20150416183600_Mac4.0.4.5_15041 6.180153
SIM Lock status : Locked (Card Lock)
Wrong codes entered : 0 (unlock attempts left : 10)

================================================== =================

Unlocking, please wait ...

AT command error

Error code 37

unlock failed !

Can someone please help ?

[Kehai]

Ok nvm i got it
For people who have this kind of problem in the futur. all you have to do is to downgrade to an older firmware.
In case it ask for a password to downgrade or upgrade use this : 58926934
+ there is a free way to unlock it so for people who can't afford to buy credits pm me.