156g now GPRS only?

[ethos]

Unlocked a 156g from 3UK and now it seems to have lost support for HSDPA.

I am only able to get GPRS connections on Vodafone now, but if I place the same SIM in an E172 in the same spot, I get an HSDPA signal.

Any suggestions would be welcomed.

[Vincentas]

Unlock can not cause this. Try to check settings in software, also, may be other connection settings.

[ethos]

Followed another thread on here and installed firmware version 11.608.08.81.00.B409. Now I can't connect to the modem at all under Windows, but it still works (in GPRS mode) in my D100 router.

Is there an updated Windows driver needed to match this firmware? I tried updating the Dashboard, but the installer can't find the modem.

[ethos]

Ok, got it working again now. The modem had defaulted to GSM only mode and the D100 was unable to change this setting.

The Windows 'driver' issue was not a driver issue. I happened to have taken a copy of the problem machine using VMWare, so I was able to run another identical instance of the system as a virtual machine on different hardware. When I plugged the modem into this VM, it found half a dozen new devices and installed the drivers that were previously on the disk. The modem then worked fine in Mobile Partner and I was able to set the default to 'WCDMA preferred', allowing me to get an HSDPA connection under Windows and subsequently in the D100 as well.

I suspect the original laptop has a problem supplying sufficient current to the USB ports, causing the modem to fail to initialise properly.