Need help upgrading to Mountain Lion

[Thestik]

Hi bros,

I am currently running OS X Lion 10.7.2 on my late 2011 MacBook Pro.

After I complete the download from the App store and try to install, encountered the error saying installation failed, due to files may be corrupted while downloading.

I tried a few times to download and install again, but still hit the same error.

Can anyone advice please?

THanks in advance!

 

[Winston7222]

Would advise that you do a backup to an external source and clean install ML, restore whichever necessary back from external source..

 

[negativzero]

Hi bros,

I am currently running OS X Lion 10.7.2 on my late 2011 MacBook Pro.

After I complete the download from the App store and try to install, encountered the error saying installation failed, due to files may be corrupted while downloading.

I tried a few times to download and install again, but still hit the same error.

Can anyone advice please?

THanks in advance!

You should upgrade to the latest Lion 10.7.5 first before trying to upgrade to Mountain Lion.