> 3.3 | Error Handling for Generic Firmware Update

> • | If a valid firmware is installed, but the AT^SFDL command is issued without sending any firmware afterwards the module will stay in the download mode. In this case it must be switched off.

> • | Disconnecting the power supply during a firmware download should be strictly avoided. If nevertheless the download is aborted due to power failure, the module will be left in an undefined state with no valid software installed. On the ASC0 / ASC1 interfaces, the module’s baudrate will be set to 57600 Baud in this case.

> • | After reconnecting power and restarting the module, you have only 1 minute to enter the AT^SFDL command and retry the download from one of the interfaces ASC0, ASC1 or USB. Also note that no other AT commands will be accepted. If the download fails to start within this time the module switches off again.

> See also Section 2.7 for troubleshooting common gWinSwup problems.