For those having problems downloading the latest LoL PH patch through Garena Messenger's auto-patcher, you may download the manual patch from LoL PH's Downloads section:
League of Legends PH Downloads
Just browse under Manual Patch.
We recommend downloading via Bit Torrent to ensure complete downloads.
For those who've downloaded the Manual Patch via http and had their downloads corrupted, use the torrent to hash check your corrupt download so you won't have to download the entire patcher again.
If you have additional queries, just post in this thread.