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Need help with Em20-g

Posted: Tue May 11, 2021 8:17 am
by punkguy00017
I have updated the firmware to 8 also downgraded the firmware to 6. Every time I run the modem in a we826 without the simcard inserted it recognized the modem. If I insert a simcard and reboot router, it cant open usb2. I have modem set to mbim.

Re: Need help with Em20-g

Posted: Tue May 11, 2021 12:31 pm
by punkguy00017
Does anyone know the ssh commands to activate usb2?

Re: Need help with Em20-g

Posted: Tue May 11, 2021 5:20 pm
by Didneywhorl
That's a new one to me. I've never had to do that.

Does the modem show up in the debug screen? (towards the bottom, not the commands screen)

You may have a bad SIM, or adapter, that is shorting out the SIM pins, which shorts can short out the modem. Are you using the adapters SIM slot or the routers SIM slot? Both can be used, you may try another adapter, or the other slot.

Re: Need help with Em20-g

Posted: Tue May 11, 2021 8:48 pm
by punkguy00017
Using the sim in the router. Also modem shows up but can't connect. Yes the modem shows at the bottom

Re: Need help with Em20-g

Posted: Tue May 11, 2021 9:34 pm
by Didneywhorl
So it's showing up in the network status page as well?

Where is it saying it can't connect to ttyUSB2?

Re: Need help with Em20-g

Posted: Tue May 11, 2021 10:19 pm
by punkguy00017
Yes it's showing in the network status page also it's showing unable to connect when there isn't a sim card installed as well.

Re: Need help with Em20-g

Posted: Tue May 11, 2021 10:22 pm
by punkguy00017
Says it in the debug page as well as sometimes when it can't detect the modem. I gotta continue to hard resetting it in order to have it detect the modem

Re: Need help with Em20-g

Posted: Wed May 12, 2021 10:55 am
by Didneywhorl
Which firmware version do you have on the we826?

Helluva monster modem to use in that router, but :shrug:

Re: Need help with Em20-g

Posted: Wed May 12, 2021 11:32 am
by punkguy00017
Lol. I agree but I'm just using it for testing purposes since I have a 1608 with an em20-g and wanting to put this other 20g in a wg3526 that is currently running an ec 25

Re: Need help with Em20-g

Posted: Wed May 12, 2021 11:37 am
by punkguy00017
Here is what the modem is showing

Re: Need help with Em20-g

Posted: Wed May 12, 2021 11:38 am
by punkguy00017
Dunno if I said b UT the modem being detected is intermittent

Re: Need help with Em20-g

Posted: Wed May 12, 2021 11:41 am
by punkguy00017
Also in the picture the modem failed to connect cause there isn't a sim

Re: Need help with Em20-g

Posted: Wed May 12, 2021 9:33 pm
by Didneywhorl
Looks fine, except its not reading the SIM card.

Re: Need help with Em20-g

Posted: Wed May 12, 2021 9:39 pm
by gscheb
Recently on a MC7455 it wouldn't read the Sim card. Literally just removed sim card and put it back in and it started working.

Re: Need help with Em20-g

Posted: Wed May 12, 2021 10:05 pm
by punkguy00017
Tried it with two diff sim

Re: Need help with Em20-g

Posted: Thu May 13, 2021 7:59 am
by Didneywhorl
Did you try putting the SIM in the adapter?

Re: Need help with Em20-g

Posted: Thu May 13, 2021 2:07 pm
by punkguy00017
Alright got it working here's what I did, downgraded firmware to ver6 after the downgrade ran AT+QPRTPARA=3 in the Huawei terminal is in the at terminal. Then Switched the modem into a wg3526 router put in sim turned on and prayed lol it's now working fine

Re: Need help with Em20-g

Posted: Thu May 13, 2021 2:54 pm
by punkguy00017
Dunno if I reset the modem if it'll start again with the can't detect dev/ttyusb2 again

Re: Need help with Em20-g

Posted: Thu May 13, 2021 10:39 pm
by punkguy00017
ok so i took the plunge and restarted the router and it connected flawlessly. bought this modem off of ebay for 30 bucks. guy selling stated that it just stopped working all of the sudden so..... i guess i got a great deal.

Re: Need help with Em20-g

Posted: Fri May 14, 2021 4:45 pm
by Didneywhorl
Dude, you got a steal!

Those aren't made anymore, and they are a beast. Last ones I sold for over $300 each.

Re: Need help with Em20-g

Posted: Fri May 14, 2021 5:42 pm
by punkguy00017
Yes for sure took me three days to get it working

Re: Need help with Em20-g

Posted: Sun Apr 03, 2022 9:05 am
by punkguy00017
Update after almost a year of using still working flawless only thing I have noticed is if I unplug it and then reconnect it it can't detect the modem. If I wait roughly 20 mins and then plug it in it detects the modem and connects no issues any of the gurus here know why it does this?

Re: Need help with Em20-g

Posted: Thu Apr 14, 2022 6:04 pm
by Didneywhorl
Super odd. No telling. They didn't seem to build them to be very durable. Might be an chip oddity that does that.