Magento connect manager - Dangerous to install upgrades above Magento version? -

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i'm wanting know if it's safe me upgrade of packages have upgrades available. magento version 1.6...but there seem upgrades include numbers 1.6.2.2 , 1.7 etc.

thanks

i think clean magento installation can upgraded through magento connect. other ways if not have unit , acceptance tests, it's risky use magento connect.


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