EM12-G Stuck on Verizon; won't switch to other carriers.

[prdg79]

Hi folks,

My EM12 has been working fine on AT&T (ipad) and then T-mobile. I unfortunately decided to try Verizon. After trying everything I could find Wireless Joint, I decided to go back to AT&T.
However, I cannot get the AT&T or even my T-mobile sim cards to work.
The problem appears to be that the modem. The CGDCONT 4 & 5 appear to be stuck on vzapp and vzwemergency.

ATT-error.jpg

The folks on the Facebook Wireless Joint recommended running
AT+CGDCONT=2
AT+CGDCONT=3
AT+CGDCONT=4
AT+CGDCONT=5
AT+CGDCONT=16

All of these worked but AT+CGDCONT=3. It returns an error.

AT+CGDCONT-3.JPG

It did clear the vzwapp and vzwemergency, however, I am still unable to connect .

AT&T-ERROR-afterCGDCONT.JPG

Is it because CGDCONT 3 is still on SOS
Is there something wrong with the EM12-g

Any help would be greatly appreciated!!!!

[BillA]

Looks like your modem's NVM doesn't get refreshed for some reason during flashing, but that's ok, let's take it one step at a time. Even so, the router usually looks at APN slot#1, while the Verizon APN's are on slots# 2-5.

First flash the modem with the latest firmware.
Next, with the sim card removed send the following AT commands from the router's menu Modem > Miscellaneous > AT-Command Terminal.

Copy and paste each command one at a time, and make sure you get an "OK" response after each command:

Code: Select all

AT+QPRTPARA=3

Wait a minute, restart the router, then enter these commands:

Code: Select all

AT+QCFG="nwscanmode",3,1
AT+QCFG="roamservice",1,1
AT&W

Turn off the router, insert your ATT or Tmobile sim card, set the proper APN/TTL, wait a few minutes then go to modem status and copy and paste all that info here. Do not do anything else, let's see the signal and connection status.