Hi, i have Fastrack Supreme 10 (WM20392). I try to uprgrade firmware on modem with DwlWin, which I download from sierra and firmware (R7-43-0-201003261552-cus-q26-02.wpk). Did everything as in the instructions RN_Open_AT_Firmware_R7.2_Release_Note (page 12). DwlWin after download sayd what all OK.
On start hyper terminal says:
+wdwl
on at+wdwl?
sayd +WDWL: V08b0j
on other commands say ERROR
What it could be?
Can anybody help me?
I’m going crazy with this device already…
Have you spoken to your Distributor 
This modem bought another organization and we do not know who it is…