I would like to know if this available band select TL-MR6400(EU) V3/V4 LTE_GATEWAY_20200325 (Beta firmware) works with my current 2026 UK build?
As I believe is is from 2020.

My current build
Firmware Version: 
1.16.0 0.9.1 v0001.0 Build 191223 Rel.66638n
Hardware Version: 
TL-MR6400 v4 00000001
Online Upgrade
Latest Version: 
1.16.0 0.9.1 v0001.0 Build 191223 Rel.66638n
Your firmware is up to date

I would like to able to choose from these available bands:

700 MHz (Band 28), 
800MHz (Band 20), 
900MHz (Band 8), 
1800MHz (Band 3), 
2100MHz (Band 1), 
2600MHz (Band 7),

Or are there any plans for an official release with manual band selection?