The device was continuously coming on and offline, updated the firmware to the latest stable release and now the device is attempting to connect to the system but is stuck in being redirected to the authentication system, with status code “20” showing in the connection logs.
What is causing the connection drop and why is it now stuck in this unsuccessful authentication loop?
Check this guide, which covers majority of basic RMS connection issues : Why is my device offline / not activated on RMS? - Teltonika Networks Wiki
Check if you can see any message near the “Status” icon in Devices tab in RMS, next to the device in question.
If the device has an exclamation mark with an error message, and it states that service is disabled, please enable the service under Administration → Companies → View company details and if credits are available, please toggle the service on.
Please also advise if you have any remaining credits in RMS → Companies → View company details.
When you add the device to RMS, do you get an authentication code? If you do, follow this guide to authorise it. How to add devices to RMS? - Teltonika Networks Wiki
Also, to clarify, from your description it seems you have local access to the device?
Lastly, a very similiar issue was covered here : Unable to connect RUT200 to RMS - #5 by Arturas
Investigate whether your provide potentially issues you IPV6 adress.
Regards,
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