I downloaded the new update RUU from android police, put it on the SD card and rename it. But when I load into bootloader it doesn't update automatically, any ideas?
I just spent an hour or so doing this. Down loaded to my CPU then transferred to Card. Wouldn't go in boot screen. Then I changed cards down loaded directy to card got into boot screen but it didn't see update. I tried renaming PG051MG.zip and no go. Then I deleted the .zip and it worked????
Edit glad you got it. I felt so stupid missing the obvious.
One thing that many of us find very irritating about Windows (and I mean no offense to Windows users) is that it hides the extension of filenames and attempts to replace it with a description of the file type in a different column.
You really want to go to Tools / Folder Options / View, and UN-CHECK the setting "Hide extensions for known file types". This will allow you to see the filename as it really is, including (in this case) the perfectly good .zip extension that was there, but hidden.