: Ensure all important data on the modem’s MicroSD card is backed up.
It is fully compatible with Windows 7 (64-bit), Linux (via Gammu/oFono), and various Android tablet integrations. Critical Considerations -huawei firmware E173 11.126.85.00.209 B427-
To check your current firmware:
"The data card can't be found. Error code: 2" : Ensure all important data on the modem’s
Ensure you use a calculator tool specifically set to output the format. Stuck at 0% or 99% USB port power fluctuations or driver crash. Error code: 2" Ensure you use a calculator
The firmware flash failed mid-way, or you attempted to flash an incompatible sub-model firmware (e.g., flashing an E173s firmware onto an E173u hardware variant).
The SIM card tray contacts are dirty, or the firmware's SIM voltage setting is wrong (3V vs 1.8V). Fix: Clean the gold contacts with an eraser. If that fails, use the AT command AT^SYSCONFIG=2,2,3FFFFFFF,2,2 to reset the SIM interface.