downgrading only possible thru physical JAFBOX.. usb cannot downgrade, only can upgrade..
ur phone will brick if u try to downgrade using usb jaf

u using official or custom FW?

well u can either put it in MP3 folder on sdcard or put it in Sounds/Music
then open your music player and Refresh Library.. ur songs shud be appear by then..

that light leak is common issue since the phone release.You need to screw it very tight , but then u can just leave it like that because i dunt think it causing any problem.

Unfortunately, this is caused by the end-user themselves. This issue can be override by doing some settings on the phone. The issue involves data usage without the user's concern, If u have noticed, the device and some applications will warn the users regarding Data / Call / SMS use permission, and most of the users are actually lack of read and understand these messages.

Guide: Settings -> Connectivity -> Destinations ->

1. Remove the STREAMING profile permanently by deleting the setting from telco.
2. In the INTERNET section remove all the telco settings.
3. In the MULTIMEDIA section remove all the telco settings except the one applicable for you, as in my case my SIM card is 3G, so I just keep my CELCOM 3G MMS only and delete permanently the rest of it.
4. In the WAP SERVICES section remove all the telco settings except the one applicable for you, as in my case my SIM card is 3G, so I just keep my CELCOM 3G WAP only and delete permanently the rest of it.

Here: http://forum.lowyat.net/index.php?showtopi...post&p=42109402

its under Prepaid User's Credit Draining Issue