Hi. I've updated my phone yesterday through KIES to Jelly Bean and I HATE IT as it's dead slow. I cleared cache and restored factory settings without any luck. I switched off any background processes and animations but that didn't do any good. Task manager shows that there is over 300 MB used memory out of 482 (why is it only 482???). On Gingerbread my used memory was around 250MB. Internet through WI-FI is also slow so I just want to go back to Gingerbread but KIES doesn't have an option to do that. By the way my phone is locked to O2. Can anyone help me?
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