Iphone 3g stuck in recovery mode

Ok, my iphone 3G is stuck in recovery mode. I keep getting the 1015 error. Everything I've found online goes on about downloading this and that to downgrade etc but its all off 'jail breaker' sites. I don't want my phone jail broken or anything like that… I just want to restore it from my back up… So is there any way to fix this? If I do the way the 'jail breaker' sites are telling me will it jail break my iphone? I DO NOT want that to happen…

Restore the iPhone in iTunes (unless you are downloading software to computer no it will not jailbreak it) the restore will restore it so it is like new

Use ireb to put it in recovery mode, then restore.

Put it in dfu mode by turning it off then holding the power button for 3 seconds then while holding that also hope the home button for 10 more seconds after that let go of the power button and hold for 15 seconds on home button iTunes will say it's in recovery but it isn't. Next go to this website.http://www.iphoneleaks.net/2012/06/redsn0w-0-9-13dev2-redsnow-6-jailbreak-ios-6-beta-2/ once you have the file downloaded extract all things and run program also remember to turn the phone off while plugged into computer otherwise once you plug it in it will turn back on. Navigate into the program into the extras category were you will find recovery option if my directions are unclear the website should help along with the program. Email me if you need help. If you have a back up saved to your computer you can restore to that instead of doing all this. Btw if it stops after the first step in the process reput it in dfu mode nothing will hurt your iPhone in this process and no warrenties will be voided.