@SagaxRabbit 

TPlink South Africa should be contacted and provide the middle firmware for ZA-N to EU.

Since this is retail product and firmware they should do it.

https://www.tp-link.com/za/support/contact-technical-support/

Meanwhile, I had another thought that upgrades may work with simcard temporarily ejected or combined with a factory reset .

I even started typing a tftp flashing method only to find that mr600 doesn't support it.

  @ng6333 

Yes, I have found out that the MR600 doesn't have a recovery method. Was fun to play around with though.

Problem has been solved, for my router at least, though probably not the way it is intended to be resolved. I have bricked the router in an attempt to force a non-existant recovery mode, so now the lights on the unit don't even come on.

I might have a look at trying to get it going again, or failing that it is destined for the e-waste bin. Only way to get it going now is probably through the onboard connector using an UART interface, and I don't have the necessary hardware nor the time and energy to go that route.
 

I have purchased myself another router (different brand though) and will be using that as my main router going forward. 

Thank you though for your effort to try and assist me with the problem, it is much appreciated.

  @SagaxRabbit 

Maybe this will unbrick it

https://community.tp-link.com/en/home/forum/topic/706276?replyId=1422898

I read yesterday, It will take openwrt fw , and from there you can re-flash stock fw.

  @Sunshine 

Hi, I've the same problem. Error 4503 while upgrade firmware.

Firmware version: 1.4.0 0.9.1 v0001.0 Build 210805 Rel.63527n

Hardware version: Archer MR600 v2 00000002

Could You have any solution?

  @Lucky74 

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 

It works! Finally I've updated to newer version Archer_MR600(EU)_2.0_1.8.0 Build 240716. Now I can run my ISP SIM card PLUS PL. Thanks a lot!

Hello

something new for 1.0.0 0.9.1 v0001.0 Build 210629 Rel.59196n (ISP Play Poland)?

Any solutions?

Thx

  @Sunshine 

Hi @Sunshine , I have the same issue as everyone else  

A bit of an old thread now, but worth a try...

mr600(eu)  1.4.0 0.9.1 v0001.0 Build 220127 Rel.61306n

bought it off ebay in Aus

Are you able to provide me with the firmware that'll get this thing working for me?

thanks in advance

  @Rickpip 

https://community.tp-link.com/en/home/forum/topic/554160?replyId=1484898

this did the job