Hi all. I have upgraded my cisco asa5510 from version7.1(2) to version7.2(4) using asdm. However i could not login to my asdm as my asdm version is 5.1(2). I tried to upgrade it to 5.2(2) using tftp from telnet console but it failed. It shows "error reading" followed by "unspecified error". However i was able to backup my asa configuration to my tftp using asdm before i upgraded the asa. Pls advise. Thks in advance.