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neworldLT
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How to downgrade LTE firmware?

Mon May 30, 2022 8:54 pm

I upgraded the firmware to the latest EG12EAPAR01A11M4G version. And found my internet became much slower. Maybe it is a coincidence that ISP broke something, but the same ISP in the phone has a great connection.

During investigating I found the B7 channel is not working, but restarting the modem will always help. After restart, the internet became a bit faster (because B7 is live now).

I suspect the problem is firmware. But how I can downgrade it to test?

RouterOS v7.2.3
Chateau LTE12
 
Zacharias
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Re: How to downgrade LTE firmware?

Mon May 30, 2022 9:13 pm

I am not sure if you can downgrade.
Also read here viewtopic.php?t=172860
 
hecatae
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Re: How to downgrade LTE firmware?

Tue May 31, 2022 10:04 pm

I suspect the problem is firmware. But how I can downgrade it to test?

RouterOS v7.2.3
Chateau LTE12
It's possible to downgrade, but you would need to host the modem firmware on a public http server or be using a version of RouterOS that allows firmware upgrade from file.
/interface/lte/firmware-upgrade lte1 upgrade=yes firmware-file="
The Quectel forums are full of Chateau LTE12 questions regarding the EG12-EA:
https://forums.quectel.com/c/iot-module/lte-a-module/35
 
neworldLT
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Re: How to downgrade LTE firmware?

Wed Jun 01, 2022 11:25 pm

Seems dongrade is possible. But how I could get a firmware version of EG12EAPAR01A10M4G? I checked the forum, but no firmware but complaints only.
 
hecatae
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Re: How to downgrade LTE firmware?

Tue Jun 07, 2022 10:23 pm

Seems dongrade is possible. But how I could get a firmware version of EG12EAPAR01A10M4G? I checked the forum, but no firmware but complaints only.
Update_EG12EAPAR01A09-R01A06.zip is over here:
https://forum.ixbt.com/topic.cgi?id=14:66288-53

I'm not sure using firmware from strange sources is recommended though.
/interface/lte/firmware-upgrade lte1 upgrade=yes firmware-file="http://netfiles.ru/share/linked/ix/lte12/EG12EAPAR01A09M4G-EG12EAPAR01A06M4G.zip"

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