Returning the tablet back to seller (Amazon UK) should be easy but I think the tablet itself is brilliant and I DO want to keep it. I fell in love with it when I started use it with KitKat.
So I searched and found the factory firmware A10-70F_S000021_150501_ROW (credit Ondigo at XDA Developers http://forum.xda-developers.com/gene...6/post62449690)
Original WORKING download link: https://onedrive.live.com/redir?resi...thint=file%2c7...
Download the factory firmware, links above. Extract.
Download Smart Phone Flash Tool (SP Flash Tool) here and extract.
Install http://developer.android.com/sdk/win-usb.html (Windows)
Backup your files on the tablet, music, video, photos etc
Power off the tablet and run flash_tool.exe in the extracted SP flash tool folder. Select the MT6752_Android_scatter.txt file. The flash tool will start to checksum and ready to flash. There are 3 options: Download only, Format all + Download, Firmware Update and Download Only. As this is a downgrade, therefore I selected Format all + Download and
Edited on 23 Jan 2016. Use Download Only, or you will lose your Wi-Fi config file maybe others as well
Please note, It didn’t do anything when I clicked the Download button and I went out answering a phone call. When I came back still nothing (or finished?). I thought I might have bricked the table But as soon as I press the power button, the flash started.
When it finishes, disconnect the USB cable and power on the table.
There was another update afterwards. The latest Kitkat version is A10-70F_20150626 (A10-70F_S000022_150626_ROW).
DO NOT UPGRADE to A10-70F_S000118_150710_ROW which is Lollipop!
Step 6, Rooting. Your warranty may be void. Do it at your own risk. But you can always roll back to Kitkat can’t you?
Go to www.kingroot.net on the tablet. Download the app and install it. It will root KitKat but not Lollipop.
Hope it helps some users like me who love the tablet but hate the buggy Lollipop