Try another browser.
Even if you downloaded file from Adobe, you would be wise to burn the installation files to disk if you have to install to another computer or HD fails.
I ultimately was able to upgrade PS CS6 (64) to 13.0.1 x64. I believe
this is the latest upgrade.
I now have a similar problem updating Bridge to 188.8.131.52. I get the
Updates failed. Updates could not be applied. Adobe Bridge CS6 184.108.40.206
Installation failed. Error Code: U44M2P7
I tried two different browsers and got the same error. What do you suggest?