Same problem here......
I got mine from minideal & it came with rooted with chenese Vroot software. Firmwire version v1.0.1. Now I'm trying to flash v1.0.4 ROM on my phone using SP Flash Tool v3.1328.0.183.
Here what I did----
1. Installed PDANet driver on my Sony Vaio Windows 8 64bit Laptop
2. Using SP Flash Tool v3.1328.0.183 as ADMIN
3. Selected ALL including Preloader with Scatter-loading
4. Switched off the phone, removed the battery, reinserted the battery
5. Clicked Firmware Upgrade [Tried both "Firmware Upgrade" & "Download" option]
6. Attached the USB cable
Now what I see is ----
*Battery is charging instead of any upgrade process
*SP Flash Tool buttons [Format, Upgrade, Download] are inactive except RED Stop Button
[Also I'm using Carliv Touch Recovery]
Plz help. This problem ruined my whole week! Because I'm spending the whole time on it.