@St3v3B 

Use this method  (MR600v2 TPG-Vodafone Australia to EU)

1- Install firmware :
https://static.tp-link.com/upload/beta/2022/202208/20220812/Archer_MR600_V2_220810_AUTPG_to_EU.zip

2- Install EU firmware:
https://static.tp-link.com/upload/firmware/2022/202212/20221205/Archer_MR600(EU)_V2_220105.zip

When completed, Login to the MR600v2 and check for updates .

  @andrii_g 

Hello,

Try this method (MR600v2 DREI to EU)

1- Install firmware :
https://static.tp-link.com/upload/beta/2022/202208/20220812/Archer_MR600_V2_220810_DREI_to_EU.zip

2-Install EU firmware :
https://static.tp-link.com/upload/firmware/2022/202212/20221205/Archer_MR600(EU)_V2_220105.zip

When done, Logon to MR600 and check for updates .

  @ng6333 

Thank you very much. Router is now updated. 

  @SagaxRabbit

Hopefully one of these old EU versions will do the trick (start with 1.5 then work down).

Archer_MR600v2_1.5.0_0.9.1_[210914-rel59719]_up_boot_Release_2021-09-14_16.52.15.bin
https://static.tp-link.com/upload/firmware/2021/202112/20211224/Archer%20MR600%28EU%29_V2_210914.zip

Archer_MR600v2_1.3.0_0.9.1_[210208-rel61056]_up_boot_Release_2021-02-08_17.06.35.bin
https://static.tp-link.com/2021/202105/20210507/Archer%20MR600(EU)_V2_210208.zip

Archer_MR600v2_1.2.0_0.9.1_[201203-rel59032]_up_boot_2020-12-03_20.29.05.bin
https://static.tp-link.com/2020/202012/20201228/Archer%20MR600(EU)_V2_201203.zip

Archer_MR600v2_1.1.0_0.9.1_[200929-rel65523]_up_boot_2020-09-29_18.49.19.bin
https://static.tp-link.com/2020/202012/20201215/Archer%20MR600_V2_200929.zip

Archer_MR600v2_1.0.0_0.9.1_[200909-rel36063]_up_boot_2020-09-09_10.13.43.bin
https://static.tp-link.com/2020/202012/20201228/Archer%20MR600%28EU%29_V2_200909.zip

** Beta **
https://static.tp-link.com/upload/beta/2022/202201/20220104/Archer_MR600(EU)_V2_211229.zip
https://static.tp-link.com/upload/beta/2021/202110/20211019/Archer_MR600(EU)_V2_211018.zip

If one of those work, Perform an upgrade to v1.6.0_0.91 EU :

https://static.tp-link.com/upload/firmware/2022/202212/20221205/Archer_MR600(EU)_V2_220105.zip

When completed, login to modem and check for updates.

  @Rob003 

See :

https://community.tp-link.com/en/home/forum/topic/554160?replyId=1485030

  @Gabor115 

See :

https://community.tp-link.com/en/home/forum/topic/554160?replyId=1485030

  @ng6333 

Thank you for your reply.

I have tried the images in the sequence as you requested. None of them worked however.

The results are as follows:

1.5.0_0.9.1 - Immediately shows error code 71211
1.3.0_0.9.1 - Uploads to 10% then shows error code 4503
1.2.0_0.9.1 - Uploads to 10% then shows error code 4503
1.1.0_0.9.1 - Immediately shows error code 71211
1.0.0_0.9.1 - Immediately shows error code 71211
Beta 211229 - Uploads to 10% then shows error code 4503
Beta 211018 - Uploads to 10% then shows error code 4503

I still think that the current image is locked to only accept ZA-N localised firmware, so a custom ZA-N localised image that removes that restriction is required. (or which changes it to accept EU images)

The firmware at this link works:
https://static.tp-link.com/upload/firmware/2021/202112/20211229/Archer_MR600(ZA-N)_V2_210804.zip

  @SagaxRabbit 

That is starting to make sense.  If correct,  Archer MR600(EU)_V2_220105 would have a localised 'ZA' version that would serve as a 'middle-firmware' to EU..

  @ng6333 

I have again tried version 1.6.0_0.9.1 that you mentioned, just to confirm, and it also immediately stops with error code 71211.

Current version installed on the router is 1.0.0 0.9.1 v0001.0 Build 210804 Rel.46439n.
 

  @ng6333 

I have tried the custom ISP image you suggested and it also failed after uploading to 10% with error code 4503

It looks like the same image that was suggested to someone else in the thread, I actually tested that one last night.

I also tried the previously suggested DREI_TO_EU custom image last night with the same result, so it doesn't work either - which I expected but tried anyways.