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Cisco Pix 525 will not accept new OS, continues to boot into previous pix version

Posted on 2008-10-28
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Last Modified: 2013-11-16
I have recently inherited a pix 525, and when I attempt to load pix os 8 onto the unit, it does not accept it.  I boot to ROMON, then i tftp the new config over and the reload the unit.  I also use the password reset steps to flush the old password out...the box does not accept the new os and when I reload the unit it boots to the old os and asks for a username and password.  I just want to factory default the unit...I've done this many times on 515's 506's and even ASA's without issue...I seem to recall reading that others have expierenced simialar issues with these, any ideas on what I might be missing or should try to factory default this unit?
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Question by:naiadmin
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by:bornskir
ID: 22832300
Did you remember to clear out the saved config once you recovered the password?

"write erase" or "clear config all" commands.

Also, can the hardware support version 8?  Based on the software specs, you need 16MB of flash and 64MB of RAM.

If the new image will copy over to flash, try deleting the old image file.  I've noticed that the appliances will usually boot to the first image it finds in flash.
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by:donaldchapell
ID: 22988787
That box will likely not accept the new code.  I had that happen on a PIX.  You'll prob need to scale it down a little bit and you'll be good.  7x is solid.
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naiadmin earned 0 total points
ID: 23201025
I replaced the unit with a pix 515e, my partner found some obscure passage on the internet ( i will see if I can get the info) that walked him through a complete flush of the unit...he had to get a new key from cisco, but he finally got the unit up with pix os 8....thx for the feedback...
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