Longsung-A9500-NB-IoT-Module-User-Manual-V2-3576207

A9500 user manual Page 25 of 37
5) Module start the firmware upgrading;
Figure 22：Firmware is upgrading
6) During upgrading, it cannot disconnect the power supply and the USB cable. Close the upgrade
window when the upgrade window shows “Complete”. It takes about 2-3 minutes for the whole
process.
Notice: During the upgrading, it cannot disconnect the USB cable and the power supply(need
ensure the power supply stability), otherwise it will cause damage to module.
Figure 23：Finished on the firmware upgrading