Good afternoon and thank you in advance.
I have searched for information on whether it is compatible to install OpenWrt on my TP-Link Archer MR600 V3 router, but it is honestly not clear to me.
I would appreciate a simple answer
Yes or no
YES: what is the file to download and the procedure.
From already thank you very much.
Greetings.
Se debe escribir en Inglés 
Translation:
Thank you in advance
I am looking for info whether there is compatible OpenWRT installation with my TP-Link Archer MR600 V3, but frankly do not encounter definite clarity.
I need simple yes/no answers:
What file I need to downoload to proceed
Simple NO - device is not supported (yet). If you have the skill to rip case open and connect serial you may lead the path towards support.
Question to you - please post local MR600 V3 site with firmware update links, I dont find them in EU sites.
How can I configure my router in bridge mode?
I need to manage my network from a second router.
I don't understand the question, sorry
Since your router is not running OpenWrt (and not supported by this firmware), you will have to consult with the TP-Link documentation/support site for details about how to do this.
That said, you can follow the OpenWrt Dumb AP guide as a general approach, but the specific methods described will not apply to the vendor firmware.
ok thanks and greetings