TL-WR850n v3 firmware

For Developers
1

is there a firmware for the Tl-WR850n V3?

2

No, see https://openwrt.org/toh/views/toh_fwdownload?dataflt[Model*~]=tl-wr850n

3

Why is not open wrt for this revision?

4

a) because you didn't do the necessary development, someone has to, so it's either you or no one
b) because it's far below (hard-) minimum system requirements, so it's never going to be either