Samsung Galaxy Ace GT-S7500 Soft Bricked

Hello i have recently installed ClockWorkRecovery and Rooted my phone. I followed this tutioral HERE Which seems to had have worked fine. I Checked that i had SuperUser and that it was working fine, which it was.

I then downloaded a Custom ROM, Automblast ROM (HERE)

I followed the steps provided

1. MAKE A NANDROID BACKUP
2. Download the firmware from the link given below.
3. Put it to the root of your sdcard.
4. Reboot to CWM Recovery.
5. Select Wipe data/Factory reset.(optional)
6. Select Wipe Cache.
7. Select Install zip from sd card.
8. Choose the ROM zip file.
9. After the installation completes choose reboot.

Upon reboot my phone displayed the GT-S7500 spalsh screen, then it loaded my VirginMobile splash screen with the noise, and then started again.
Ever since this i have not been able to get the phone to boot.

I tried to use my backup i had made in step 1, but it keeps saying MD5 Sum invaild

I can still access download mode, and i can still acccess Recovery mode.

Odin3 still picks up the phone in Recovery mode, but when ever i try to apply the orginal Stock rom (From SamMobile) in Odin3 it seems to get stuck

"<ID:0/005> Added!!
<OSM> Enter CS for MD5..
<OSM> Check MD5.. Do not unplug the cable..
<OSM> Please wait..
<OSM> S7500XXLH2_S7500VIRLH1_S7500XXLH1_HOME.tar.md5 is valid.
<OSM> Checking MD5 finished Sucessfully..
<OSM> Leave CS..
<ID:0/005> Odin v.3 engine (ID:5)..
<ID:0/005> File analysis..
<ID:0/005> SetupConnection..
"


Help me please!!! Thanks!!!