Hi

I've been trying to upgrade locally my router Archer RM600(EU) from 2 websites :

https://www.tp-link.com/en/support/download/archer-mr600/v1/#Firmware and https://www.tp-link.com/fr/support/download/archer-mr600/v1/#Firmware

(apparently this model is not on the us website)

There are 3 firmwares available :

1. Archer MR600(EU)_V1_210608	Download
   Published Date: 2021-06-10	Language: English	File Size: 10.75 MB

2. Archer MR600(EU)_V1_200511	Download
   Published Date: 2020-06-28	Language: English	File Size: 10.73 MB

3. Archer MR600(EU)_V1_190412	Download
   Published Date: 2019-05-24	Language: English	File Size: 67.84 MB

NONE OF THEM WORKED!! (obviously I made sure to extract the zip and used the .bin file as mentioned in the pdf tutorial: How to upgrade TP-Link Wireless 3G4G Router)

I always make sure the version was right before I download the firmware.

Here are the errors I receive:

For the 2 most recent firmware : Error code: 4503 The uploaded file was not accepted.

For the last oldest firmware : Error code: 71211 Failed to upload upgrade file. Please select the correct file.

PS: The User Interface is branded with my network provider's logo

PPS: Forgive me for putting General product in the model section I could not find my tp link router model (which is quite strange for me)