Recurring Black Screen of death

[DavidBlak]

I have an iPhone 3g with 4.2.1 and until recently, I haven't had a single problem with it. Two weeks ago, it started doing the "black screen of death" and it will usually do it 3-4 times in one day and then not at all for 3-4 days. The only solution was to press the home and lock buttons to reset it, but then it will get stuck on the Apple logo screen for 20+ minutes. I have to reset it 3-5 times before it will actually work. Then I have to re-sync it or my apps won't load. I am due for an upgrade Mar 30, so this phone has to last me until then. (I got it from a friend over a year ago for free, in case anyone wonders why I have a 3g and I'm still under contract)

Does anyone know of a permanent solution?

 

[Dweez]

Have you done a hard reset?

 

[DavidBlak]

What exactly is a hard reset? Maybe I have done it.

 

[DavidBlak]

(Maybe this is a hard reset, I dont know)

I already restored it to factory defaults after it happened a few times.

 

[DavidBlak]

...and it died for good. No amount of resetting gets any response than an indefinate logo screen. Got to wait til March 30 before I can upgrade. Looks like it's 7 weeks with a crappy spare...

 

[bandofbrothers]

I already restored it to factory defaults after it happened a few times
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How about a clean install of the iOS ?

 

[DavidBlak]

Yep. Tried that to no avail.

 

[normanbates]

Have you tried putting it into DFU mode to do the clean install?