@Majdi.Tamim @Kevin_Z

SOLVED! The support send me a link with a beta firmware to unlock my problem. Seems that the fw in my Archer was NL version. After the beta fw I was able to upgrade to the last EU fw. Thank you!

@Kevin_Z . Thank you! In a few hours I will try what the email say and post the reply here.

@Kevin_Z Thank you for the quick answer. Yea, I unzip the files and try to upload only the .bin I try via cable and via wifi. I even try to reset router to factory, unplug the phone cable and try the...

@Kevin_Z

Hello Everybody, I try to upload the firmware ArcherVR600(EU)_V2_200701 and error 4503 popped up then I try with the Archer VR600(EU)_V2_200226 and still Error 4503 I try to reset to factory and...