As I mentioned previously, quite a few people had to do the whole process several times before it takes but it does work.
Because of this make sure your battery is 100% charged before starting. Kenji91 is the first person I've seen who ran out of battery so far. Last week when I eventually finished flashing 208 my battery was down to 30%.
For the record, having done the .206 to .208, I didn't think I would need it to be at 100%. Learn from my mistakes! Better safe than splicing a USB cable to manually charge your phone.