#My 1080p v1 comes with firmware 2.0 (2.0.0.1A_201612051401). I was able to apply this hack to get telnet and ftp. Thanks to @xmflsct!

However, yesterday I upgraded (through the YiHome app) to the latest 2.1 (2.1.0.0A_201703071456) firmware, and the hack doesn't work any more. Yes i tried to reapply the hack from scratch. I lost telnet & ftp.

Also tried to store the firmware using the home_y20m dump generated by @xmflsct as posted here, but it didn't restore at all (renamed it to "home" and put at root of sd card). I suspect it's a generated home partition dump, not an official firmware.

I'd appreciate if anybody can share a copy of the official firmware 2.0.0.1A_201612051401 for 1080p v1.

Btw, you can also download the latest firmware 2.1.0.0A_201703071456 here.
http://www.xiaoyi.com/home/firmware/download/?version=4
Click on "download" of the "2.1.0.0A_201703071456" firmware