I have made this tool just to ease the way for XDA members but if something wrong goes due to this I am not responible for it but would help you as much as possible. Also if mods find a better place to move this tool just move it :)
This tool is based on jjdoctor's ROM Porting guide so please give him THANKS too. This tool automatically ports an Arc/Neo ROM to Ray in few simple automated steps. All you have to manually edit is build.prop and the instructions for that are also in the tool.
Download the tool from here.
The instructions are very clear within the tool, so no need for any extra instructions. Say yes to everything it says and overwrite all the files asked.
Xperia Neo/Arc to Ray ROM porter, a Tool/Utility for the Sony Ericsson Xperia Mini, Mini Pro, Active
Last Updated 2013-12-11