Modem Failure After Update Firmware
Hi
I have problem with Modem TL-MR6400 after update Firmware
1. There are Error Code : 1
2. Imei : undefined
Is any solution to fix it...?

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Hi, have you tried to factory reset TL-MR6400_V5.3 by holding the reset pinhole for about 10 seconds?
After TL-MR6400(EU)_V5.30_1.5.0 Build 221121, I saw there are two newer firmware versions. Have you tried to update to the latest TL-MR6400(EU)_V5.30_240716:
https://www.tp-link.com/en/support/download/tl-mr6400/v5.30/#Firmware
By the way, may I know how long you have had the TL-MR6400?
Thank you very much.
Best regards.
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Hi, have you tried to factory reset TL-MR6400_V5.3 by holding the reset pinhole for about 10 seconds?
After TL-MR6400(EU)_V5.30_1.5.0 Build 221121, I saw there are two newer firmware versions. Have you tried to update to the latest TL-MR6400(EU)_V5.30_240716:
https://www.tp-link.com/en/support/download/tl-mr6400/v5.30/#Firmware
By the way, may I know how long you have had the TL-MR6400?
Thank you very much.
Best regards.
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Hi Thank You has answer my questions
But i had try it before and update the firmware
And all nothing happen to my Modem Router
I used Wifi Method for update the firmware
I Had these Modem Router about 3 Years
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Hi, thanks for the update.
It is very likely that there is something wrong with the hardware.
It is suggested to contact the local retailer to see whether the device is under warranty.
Best regards.
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