These are for REV 2 Boards only!
update_X5II_204j2104.img - FW date : 2013-11-18 - PRE-ROOTED
update_X5II_206j2105.img - FW date : 2014-02-24 - seems slower! - PRE-ROOTED
update_X5II_207j2105.img - FW date : 2014-03-11 - Not ROOTED! XBMC included!
Installation instructions - for Beelink X5ii Firmware
Simply unzip and install driver, the reboot your PC as these drivers are notoriously problematic a reboot usually cures most problems!! At this point it is worth noting that NOT all micro USB leads are the same!! So if the next bit does not seem to work for you, FIRST try another USB port, Then try another USB lead!!
So with the drivers installed and RK batchtool 1.7 Running
1) With the X5ii Unplugged from the 5v PSU, Plug your X5ii into your PC using a micro USB lead plugged into to USB OTG port of your X5ii
2) Using a small pin or earring! press (and keep pressed) the reset button on your x5II and at the same time plug the 5v power jack into the X5ii (this can be difficult so what i do is plug the jack in but not enough to power it then push it all the way in when you have the reset button pressed)
3) RK batchtool should now display a green light (box 1) meaning the X5ii is connected and ready to be flashed!
4) Its now just a case of selecting the firmware from the ... button and and pressing upgrade!!
The update will install, and you will be informed when it is complete, Then you just reboot the X5ii and It will complete the rest of the process on your device!