Ok, then RAM isn't the issue. I would suggest doing the reboot, the upload the u2d package for 7.511 first. Then we can go from there.
Worst case scenario would be to make a new config-backup, save it off to a workstation, then reinstall from ISO (8.103 would be your best bet at the moment), then upload and apply the config-backup. The process will take you around 20 minutes. Then you can decide to stay on 8.103 for awhile or continue to update to 8.202.
__________________ ACE v8/SCA v9.3
...still have a v5 install disk in a box somewhere.