Download Android KitKat 4.4.2 109k4 stock firmware for Tronsmart Orion R28 TV Box from here, here or from here. Download previous version 108k4 from here.
Firmware: Tronsmart R28 109K4 RK3288-20140929
Model: Tronsmart Orion R28 Pro & Meta
Archive size: 383 MB
Image file name: update_R89_109k4108_tronsmart.img
Platform: Rockchip RK3288
Boot version: 0.02
FW Version: 4.4.02
ChangeLog
1.Fix stuteer when playing 4k videos;
2.Improve AVR compatible;
3.Improve IR remote short/long press function and others;
4.Update xbmc to Kodi14.0 Beta3;
5.Fix Async for Google Calendar/People;
6.Improve Browser compatible;
7. Improve HDMI compatible and support HDMI2.0;
8.Improve WifiDisplay;
9.Keep on OTG connection when powering on;
10.Add SW/HW keyboard option;
11.Hide Status Bar defaultly;
12.Fix issue of Pink Screen on some TVs;
13.Other little tweaking;