I have an iPhone 2G 16GB and i jailbroke it and installed installous and got free apps etc. I have used it for almost 2 Months, and recently it crashed. The Apple Logo was stuck on the screen when i tried to turn it on and never loaded. So i downlaoded iPhone PC Suite and got a fix from there where you can DISABLE all mobile substrate addons to fix the problem. I did that and my iPhone works fine now. But i cant re-enable them. Cydia says I still have all the Packages and ive tried reinstalling them but it doesnt work when i try using them e.g. SB Settings. I reinstalled it and slid across the top of the screen but the settings didnt come up 
but when iPhone PC Suite fixed my iPhone it said the files were deleted. Cydia says they are installed and working. My iPhone is NOT in Safe Mode but Mobile Substrate addons still do not work. I know it is because of it that my iPhone crashed, but there were some that i used fine and didnt wreck anything. I want them back :/ Please help 
but when iPhone PC Suite fixed my iPhone it said the files were deleted. Cydia says they are installed and working. My iPhone is NOT in Safe Mode but Mobile Substrate addons still do not work. I know it is because of it that my iPhone crashed, but there were some that i used fine and didnt wreck anything. I want them back :/ Please help