Hello,
has anyone else had this problem? What's wrong?
Modem: Dell Dw5821e
Model: DW5821e Snapdragon X20 LTE
Firmware: T77W968.F1.0.0.5.2.VF.010 050
Modem: Dell Dw5821e-eSIM
Model: DW5821e Snapdragon X20 LTE
Firmware: T77W968.F1.0.0.5.2.GC.013 050
Both modems are installed on the RBM33GR2 running RouterOS v.7.22.1
Both modems are reporting the same errors:
lte1 mbim: >>> E #12 - conn_ext: lte attach config, error: INVALID_PARAMETERS
lte1 mbim: connect extensions disabled
lte1 mbim: >>> E #13 - connect: register state, error: INVALID_PARAMETERS
lte1 mbim: error: continuing after: network mode selection failed
lte1 mbim: >>> E #14 - connect: radio state, error: OPERATION_NOT_ALLOWED
lte1 mbim: >>> E #15 - connect: radio state, error: OPERATION_NOT_ALLOWED
lte1 mbim: ERROR: wdm send failed: 19
A modem built according to the instructions:
https://radenku.com/setting-modem-dell-dw5821e-openwrt/#google_vignette
Best regards.
Olaf
I am using DW5821e-esim Snapdragon X20 LTE with no issues.
0x413c / 0x81d7
^CUSTOMER: 1
May be you enabled esim but using phisical sim?
May be modem in FTM mode?
Whats the answer for AT^SWITCH_SLOT? and AT+FTM?
[admin@MikroTik] > AT^SWITCH_SLOT? i AT+FTM
expected command name (line 1 column 1)
I've already tried 5 modems—2 e-eSIMs and 3 SIM cards. I keep getting the same errors.
You can’t use at commands this way 
Example:
/interface lte at-chat lte1 input=”AT+FTM?”
[admin@MikroTik] > /interface lte at-chat lte1 input=AT+FTM?
expected end of command (line 1 column 41)
[admin@MikroTik] > /interface lte at-chat lte1 input="AT+FTM?"
output: Device is in: 1, FTM
OK
Your device is in Factory Test Mode.
In this mode it cannot connect network.
What mode should I switch it to, and how? Can I do that?
You can find this information in the link you provided in the first post of this topic.
ortazebra, thanks for the help!!!
If you want to disable FTM mode on your modem, enter the following command:
at^nv=2497,1,"01"
It worked for me.