Hello, there!
I also recently got V6 of this Router and installed 19.07.7 on it by following the installation instructions you mentioned (during these steps for cutting boot loader etc from vendor fw I used tp-link fw for V6). Then I played around with several mt76-based drivers for no luck, so I went back to stock fw. What was really interesting: All the settings I had done in the stock firmware were there, nothing was erased! The OEM-WebGUI-password was set, the time synchronisation settings (using my primary router as ntp-server), everything I checked was exactly like before. As I usually don't play around much with vendor fw besides having a short glance over stock functionality I can't really tell, if this is a real difference to V4, as I never reverted my V4 back to stock.
Then I searched for TechData about V6 in all the well-known sources, but was not able to find out what 5-GHz-Radio is built into V6. Not even an FCC-ID (also searched for an probably imaginary A5 v6 in an act of pure guessing)... So I opened the router and made some photos. I found an MT7628AN + MT7613BEN. The latter ist different from V4/V5, so I checked for devices with this in the TOH and found some in SNAPSHOT and some hints in the forum that indicated, that mt7615e was the driver to use for this. So I decided to have another try with 21.02.0-rc3, driver mt7615e and Firmware mt7663-firmware-ap. With this combination the 5-GHz became accessible. I made an experimental image using imagebuilder with profile for V4 including luci.
Obvious issue with these images so far seems to be the WLAN-LEDs, they just won't stop blinking after WLAN is activated. Also I cannot tell, if DFS ist working for 5-GHz. And of course the device reports itself as V4, as I didn't create an extra profile for V6.
If you wanna try @samba2 @tchargui you're welcome!
THIS is a link to a DropBox-Folder with 4 Files in it:
- experimental-archer-c50-eu-v6-factory.bin - for use in TP-Link WebGUI, based on 21.02.0-rc3 for C50v4
- archer-c50-eu-v6-sysupgrade-back2stock.bin - for going back to TP-Link-FW via LUCI / SSH-Sysupgrade
- experimental-archer-c50-eu-v6-factory-for-tftp(name tp_recovery).bin - same as first, but for use with TFTP-method
- archer-c50-eu-v6-tftp-back2stock(name tp_recovery).bin - for going back to stock via TFTP
