I have tried some more, but still in recovery mode or looping on/off showing just Apple logo. The iPhone actually shuts off so iTunes looses contact, then rec mode again and error 21. I have checked the battery connector and it seems ok. Some videos on youtube explains that a thorough rinse og...

Hi! I was stupid and bought a used 4S the other day. I was told it was in recovery mode, but I gambled and thought it was a quick fix. Some of the symptoms are similar to other posts found by google, but not all. Therefore I made my own thread. So...can my 4S be fixed, or is it just for parts...