Quectel EM12G All Bands command for band locking reversal

[Didneywhorl]

Reference post. This is just a reference tutorial of what command to use to get all bands back on a Quectel EM12G modem. This is not a full AT command tutorial.


If you have band locked your Quectel EM12G modem and did not remember to save the bitmask for all bands, here is the exact command to restore it.

Code: Select all

AT+QCFG="band",5af0,2000001e0bb1e39df,0,1

Quectel-EM12-All-Bands-Command.png

A zero in any of the places in this command means to ignore.
So :

AT+QCFG="band",0,2000001e0bb1e39df,0,1

says to ignore the first (WCMDA/3G) band mask, and set the second band mask (4G/LTE), and ignore the third band mask (TDS bands, but not supported on the EM12G). The ",1" on the end is explained below.

The final parameter on the end of the command above can be a ",0" or ",1" to say whether or not you want to apply the band mask immediately or not. If you omit it it will apply immediately. 1 for immediate apply, 0 for apply after reboot of modem.

Command Description:

Quectel-Band-Mask-Command-Description.png

[Passendi..7]

What is the AT command to lock band 28?

[Didneywhorl]

Check here:

https://wirelessjoint.com/viewtopic.php?f=16&t=943