It happened to me as well mate, I was able to use Lumia Recovery Tool once, but the second time it told me my phone was not recognized. Someone told me that the program does not recognize your phone if you had dev prev running on it, however WC did an article that said all 8.1 devices were now supported by the aforementioned software.
After a lot more digging around (went to a lot of forums :/) I finally managed to get somewhat of an answer. A user with a 925 brought his phone to a nokia store after suffering through the same issues and they managed to fix it. When he asked what the problem was they said the phone had a faulty motherboard and few other connecting cables had to be replaced as well....
In my case I already changed the battery and that did not work, so the obviously my next step is to get a new motherboard and cables :D
Don't really need the phone, but it seemed like a fun diy project so that's why i'm going to do it, if I fail.. oh well it was fun to tinker around a bit.
This obviously doesn't help you, but I hope you have some "closure" :)
If you're not sure about the warranty then just go back and ask :)
01-26-2015 02:20 PM