Ok so I just got that 5.5 update on steam. and now i basically don't have access to playing tb.
lemme explain.
i have a mid 2010 MacBook pro and it was never updated completely because of this one issue.
I am currently sitting on Mac Os Sierra (ver 10.12.6) i need to upgrade to my final doable upgrade Mac Os High Sierra.

Now the problem.

Through OFFICIAL channels. Apple only has the 10.13.6 update available for download.
but my computer is not allowing me to jump to that update unless i download 10.13 first.

So im in a predicament. In no official channel can i download 10.13 only. So I'm seriously asking for help for a link to the OG 10.13 high sierra link. or a legit and safe link to just download it. Im not bringing down my tb version. i was in that hole for 4 years. and that shit apple posted about downloading other update versions is gargle to me since the link they provide leads only to 10.13.6