INSYS GSM 4.3 I4, Manual, Page: 70 / 78

Maintenance INSYS GSM 4.3 I4
70
Opening a DVD drive, playing music or connecting a USB device can also
disturb or interrupt the data flow. As a result, the INSYS GSM 4.3 I4 may fail
to function, and only INSYS MICROELECTRONICS might be able to restore it.
5. Type
AT**FLASH
to start the firmware upload.

The modem reports “ Start update with ESC, Reset with @ ” .
6. Press the Esc key to start the update.

The modem reports ” Expecting download with 8N1 ”

If the firmware is damaged or protocol and/or baud rate are unknown, you
can also perform a reset and press the Esc key within a second then to enable
the bootloader. This can only be made locally.
7. Send the MHX file with the firmware now with the terminal program.

If you use the terminal function of HSComm, you have to use the function
“Send file …” in the File menu.

The upload progress is displayed by dots in the terminal window.

The INSYS GSM 4.3 I4 reports the successful upload of the firmware loader,
for example with
BL: ACFA
FR: 01D0
FB: 78FE-01D0
Ready

The INSYS GSM 4.3 I4 resets automatically and is then ready for operation
again.

If you didn't receive the previous message for a successful upload, the upload
has most probably failed. Try to reset the INSYS GSM 4.3 I4 and to repeat the
process from step 5. If this fails and the INSYS GSM 4.3 I4 does no longer react
to AT commands, please contact the INSYS MICROELECTRONICS support de-
partment.