Try starting your phone with the sim card and memory card removed and see if that helps. Also make sure the battery isn't flat. If holding the power button reboot does not help the only other option you can try is to hard reset the phone. However, this means you will lose everything on your phone unless you have a previous backup.
To hard rreset your phone, press and hold “Volume Down + Camera Key + Menu Key” and press power button until your phone vibrates.
You should be able to reinstall all the paid apps from Ovi Store.
Crashes can be caused by anything, hardware fault, data corruption, faulty sim etc. etc. So it would be pure speculation at this stage.
You could try your local Nokia Care Point but one of of the first thing they try is the hard reset so you will lose your data anyway.
13-02-2012 13:34 - edited 13-02-2012 13:35
The hard reset will not roll back firmware updates so your phone will remain on Belle. The Hard Reset should result in a clean Belle. You mentioned reboot loop. Did you check the sim?
Regarding reinstalling apps from Ovi Store. You can contact Nokia Care if you have problems.
The alarm normally works even when the phone is powered off. Unfortunately sounds like your only option are the hard reset or the care point
Only wipes the c: drive.
Unfortunately unforeseen things do happen during updates which is why you are reminded to backup your data beforehand.
Mind you, personally I usually hard reset and reformat my phones just before updating anyway. I believe this is the only way to get a very clean update.
13-02-2012 14:17 - edited 13-02-2012 14:19
WIll the hard reset wipe both C: and E: drives on the phone?
If you are talking about a 3 key depressed power on "hard reset" it will delete all user data from C:\ & E:\ including wallpapers, media & maps provided with device. Nokia Care Point can always restore media content although may charge for this, as you are warned not to carry this out upon Symbian S^3 device and entails installing about 1.3GB of files to device.
You can download paid applications a total of 10 times from Nokia Store although applications bought in the past have a horrid habit of being pulled from the store by developers!
Here is appropriate Nokia resource for formatting device:http://europe.nokia.com/support/product-support/n8
Historically hard reset upon Symbian S^3 can cause issues with launching Nokia Store although should now be resolved. I am sure that only Care Point obligation is to provide working device and if you have deleted Belle "wallpapers" for example I doubt that this is covered and map user data can easily be re-downloaded by user anyway.
Oops! My mistake. The hard reset does wipe the E: but not the F: drive. I absentmindedly forgot the N8 has both mass storage and memory card.
The hard reset will return the phone to its out of the box state. A backup, if there is one, can be used to restore data. I presume you did backup your phone as advised before updating. You should be able to use the same backup now.
Hard reset does not invalidate your warranty but if you are more uncomfortable doing it yourself then a Nokia Care Point would be your best bet.
The hard reset will return the phone to its out of the box state. Any widgets which are part of Belle will remain. Any widgets you installed yourself will be lost but you should be able to download and reinstall them from the same source as previously.
There is no "safe mode" in symbian. It probably did crash for a reason but it is impossible to tell what the reason might be. Most care points will probably not bother finding out either. They will probably just reset or reflash your phone. If that does not work then it is probably hardware.