E3372h changing COM port numbers during "Detect Modem" operation

[razvan_t]

Hello,

I'm having trouble getting the DC - Unlocker client working with my E3327h. Here are the steps performed:

1. Plugin the E3327h device into the USB port
2. Windows assigns COM ports like this:
   • COM4 - Application Interface
   • COM3 - PC UI Interface
3. I open DC - Unlocker 2 client 1.00.1431
4. Perform "Detect Modem" with Auto Detect. Output is this:
   • DC - Unlocker 2 Client 1.00.1431
     
     Detecting modem :
     
     selection :
     manufacturer - Huawei modems
     model - Auto detect (recommended)
     
     Found Applications port COM3
     
     Found modem : E3372h
     Model : Huawei AuthVer 4 modem (New)
     IMEI : 869907024476398
     Serial NR. : G4PDU16125000684
     Firmware : 21.200.07.00.141
     Compile date / time : Oct 10 2015 11:52:13
     Hardware ver. : CL2E3372HM
     Dashboard version : UTPS23.015.11.01.141_MAC23.015.11.02.141_LNX23.015 .11.01.141
     SIM Lock status : Locked (Card Lock)
     Wrong codes entered : 0 (unlock attempts left : 10)
   • At the same time Windows reacts as if the device has been unplugged from the USB port and then plugged back in. When looking at Windows device manager, now the device is assigned a single COM port. That is COM8 - PC UI Interface
5. Now pressing "Network unlock" will result in the following output:
   • Unlocking, please wait ...
     
     Port unavailable
     
     Error code 24
     
     unlock failed !
6. If I repeat the operation with the modem now on COM8 here is the output:

DC - Unlocker 2 Client 1.00.1431

Detecting modem :

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

Found Applications port COM8

Found modem : E3372h
Model : Huawei AuthVer 4 modem (New)
IMEI : 869907024476398
Serial NR. : G4PDU16125000684
Firmware : 21.200.07.00.141
Compile date / time : Oct 10 2015 11:52:13
Hardware ver. : CL2E3372HM
Dashboard version : UTPS23.015.11.01.141_MAC23.015.11.02.141_LNX23.015 .11.01.141
SIM Lock status : Locked (Card Lock)
Wrong codes entered : 0 (unlock attempts left : 10)

Interesting to note that the COM ports are not changed this time.

7. Next step is to press on "Network unlock" and now once again Windows reacts as if the device has been unplugged from the USB port and then plugged back in. Now the ports are back the way they were at step 2 above:

1. COM4 - Application Interface
2. COM3 - PC UI Interface

The output is now:

Unlocking, please wait ...

Waiting modem/phone to be ready ...
AT command error

Error code 37

unlock failed !

Please let me know if I missed anything here...

[Valdemaras]

Error code 37 means firmware that runs in your device is not supported for unlock.

[tolzan]

Same error with identicaly modem. How change the firmware?