HT-M2808 - change region from AS923_1 to AS923_4

#1

Hi,

I purchased two HT-M2808 devices and they are set to region AS923_1.
I understood that it is possible to modify it to work with AS923_4, how can I achieve this?

#2

Same here, bought 5 units, I would like to request that AS923-3 be also included.

#3

is it possible to change the region? like EU868 to AS923_1?