upgrade of ciscoasa5500 image

i currently have asa550 running
asa version 7.0
asdm 5.0

i want to upgrade but as my first time need to know....
if i upgrade the asa image via asdm does it overwrite all my exsiting config/ruleset etc?
also
in the following articel it stated select tools>upgrade but in my version 5.0 asdm is says tools>upload image from local pc

so my main question is the exact process to follow as my end game is to get to asa v7.2 and asdm 5.2 so i can setup and use L2TP and will it overwirte my existing config?

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hercnemesisAsked:
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2PiFLCommented:
Here's a Cisco article on how to upgrade:
http://www.cisco.com/en/US/products/ps6120/products_configuration_example09186a008067e9f9.shtml

No, your config will not get overwritten, it will stay the same.
No, uploading new images will not overwrite existing images.
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hercnemesisAuthor Commented:
i have checked these intructions but when i go to boot config nothing is listed. i assume its becasue its the first upgrade since new so do i need to add one(asa 7.1) in first?
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hercnemesisAuthor Commented:
i have now got it working and upgraded ok, bascially followed the command line method which is far easier than using the asdm
thanks for you response/advice
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