Cannot ungrade firmware to be able to select band

Cannot ungrade firmware to be able to select band
Cannot ungrade firmware to be able to select band
2021-01-22 08:06:31 - last edited 2021-01-25 02:25:01
Model: TL-MR6400
Hardware Version: V5
Firmware Version: 1.1.0.0.9.1

Hi

 

From another thread I saw that i could download a beta version of firmware which would allow me to select a band, I have downloaded the firmware  (boot_up 200325) however I get an error when trying to upgrade. error 71211.

 

Basically I am using the Rain network and need to select Band 41 to be able to get decent speeds otherwise my speeds are less than 1mb.

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6 Replies
Re:Cannot ungrade firmware to be able to select band
2021-01-22 12:25:11 - last edited 2021-01-25 02:25:01
If the FW in question is for another region then you can't use it on your device. For ex. if your device is an EU version, you can't upload a FW for US version and vise versa. You can check your device region on the bottom sticker.
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Re:Cannot ungrade firmware to be able to select band
2021-01-22 12:56:16 - last edited 2021-01-25 02:25:01

@Ivaylo Thanks, just checked it is an EU device, is the firmware update a US one and is there an EU update perhaps? 

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Re:Cannot ungrade firmware to be able to select band
2021-01-22 17:16:26 - last edited 2021-01-25 02:25:01

@ImsJ

 

Here's the list of FWs for EU version with HW v5.

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Re:Cannot ungrade firmware to be able to select band
2021-01-25 02:28:28

@ImsJ 

 

Hello, are you trying to upgrade to this beta firmware?

https://static.tp-link.com/2020/202012/20201208/TL-MR6400(EU)v5_1.1.0_0.9.1_[201113-rel63736]_up_boot_all_2020-12-08_09.38.45.zip

 

As per the error message you experienced (error code 71211), it seems that you select a wrong file, please check again if you download the correct beta firmware for your MR6400, you need to unzip the file first after downloaded.

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Re:Cannot ungrade firmware to be able to select band
2021-01-25 07:42:46

@Kevin_Z 

 

hi, I did manage to download it and install it thanks, hasn't made much of a difference unfortunately, seems that the rain network is just bad in my area.

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Re:Cannot ungrade firmware to be able to select band
2021-01-25 08:40:45

@ImsJ 

Sorry to hear that. sad

 

Are you able to test different SIM cards with it? If the Rain network is not good, maybe you can change the SIM card carrier to have a try.

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