You sent me a wrong firmware, could you please recheck the post? This is the version i've wanted 1.4.1 Build 20200714 Rel. 47859 I already have the firmware you sent. Device-Deco M4 (V2) US

Okay, writing the reason for what i'm seeking for such firmware model! I've bought a single unit of deco m4 about 7-8 months ago, out of the box the router didn't support 5ghz band in my region (BANGLADESH). After contacting with tp link BD they provided such firmware (1.4.1 Build 20200721 Rel. 24433) and updated the router using this firmware, 5ghz got detected after that. After few months of that i've bought another unit of deco m4 but out of the box it had the facility of 5ghz band. And it's firmware model was the required ones! After using two routers i couldn't avail the mesh facility, needed to turn the wifi on and off most of the time for switching from one unit to another using my phone. In fine it works like a amplifier/repeater. Contacted with tp link BD they couldn't find a soln for this issue! Moreover while updating the router with 1.4.1 Build 20200721 Rel.24433 it shows that it's the oldest version! Can you provide the latest version for my region which will support 5ghz alongwith 2.4? So that i can operate the router seamlessly. Bangladesh region.

@TP-Link Oldest ones is the first one bedroom-1

Newer ones is the second one

TP-Link wrote

@WizzieL 

Hi, Sorry for the mistake.
The firmware I have sent is 1.4.1 Build 20200721 Rel. 24433;

so you actually wish to downgrade the main Deco's firmware back to 1.4.1 Build 20200714, right?

PS: the M4(US) V2 version is 1.4.1 build 20200727;

Thank you very much.