Root [Virgin Mobile] URGENT HELP me5 mismatch

So i decided I would try out jdsingle76 4.3 Rom so I went ahead and downloaded everything.I made a back-up of my previous rooted stock Rom just in case. So I didn't like the rom and I decided to go back and restore my old rom. I cleared everything and went and restored my rom ans then got the error MD5 MISMATCH. So I followed instructions online where you type in code into terminal emulator to fix the errors but it was no can I fix this? I either want to restore from my back-up or at least get the same exact rom I had before. PLEASE HELP