how to upgrade suitecrm 7.7.3 to any 7.10 because no patch is available on support site.
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Hi @AgrawalSa!
Welcome to the community 
To upgrade from such an old version you’d need to daisy chain upgrade packages, best practices should be followed backing up between each version jump and doing smoke testing on each upgrade to ensure the system works as expected (bugs are expected in older versions however). As you go you may need to upgrade PHP versions also! Best to refer to this matrix if you get into bother!
The path i’ve found so far could look like this;
SuiteCRM-Upgrade-7.7.x-to-7.8.31.zip
SuiteCRM-Upgrade-7.8.x-to-7.10.36.zip
SuiteCRM-Upgrade-7.10.x-to-7.12.6.zip
Let me know how you get on and whether you bump into any major issues!
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