According to sparrow182's post,
U can download the patch using this link below:
XX stands for the number u want to download. For example, if you want 72.RTP, then use
When u download the patches, put them in 'Patches' floder in ur game files, for example: Aeria Games\RO2\Patches\; Then launch RO2 client and it will update using these patches u downloaded.
BTW: I found out that from 68 to 76.TRP, only 75.RTP cannot download from this link, others are fine. U can have a try.