Get Delta Firmware Package; Put Delta Package On Ftp/Http(S) Server; Execute At Command To Upgrade The Firmware - Quectel EP06 User Manual

As shown in the above figure, customers only need to perform the following steps to upgrade the
firmware.
Step 1: Get the delta firmware package from Quectel.
Step 2: Put the delta firmware on FTP/HTTP(S) server.
Step 3: Execute AT+QFOTADL command. Then the module will automatically download the package
from FTP/HTTP(S) server via LTE/WCDMA network (Step 4) and finally automatically upgrade
the module's firmware (Step 5).

2.1. Get Delta Firmware Package

Before upgrading, customers need to check the current firmware version (the original version) by
executing ATI command, and also need to know the target firmware version. Then the two firmware
versions should be provided for Quectel or the module supplier in order to get the delta firmware package.

2.2. Put Delta Package on FTP/HTTP(S) Server

When using the DFOTA function, customers need to set up an FTP/HTTP(S) server by themselves, for
Quectel does not provide such a server. Then please put the delta firmware package on the server, and
record the FTP/HTTP(S) path. The module will get the delta package from the path after executing
corresponding AT command.

2.3. Execute AT Command to Upgrade the Firmware

After putting the delta firmware package on the FTP/HTTP(S) server, customers need to execute
AT+QFOTADL command. Then the module will download the firmware package from the FTP/HTTP(S)
server over the air and upgrade the firmware automatically. For more details, please refer to Chapter 3.
EP06&EG06&EM06_DFOTA_User_Guide
LTE-A Module Series
EP06&EG06&EM06 DFOTA User Guide
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