For all of the ten people that care, I installed High Sierra On a mid 2009 MacBook Pro : r/mac
Apple MacBook Pro A1342 Mid 2009 Core2Duo 4GB RAM 250GB HDD High Sierra VC080 | eBay
Installer macOS High Sierra sur un Mac non supporté | Le journal du lapin
MacOS High Sierra Compatible Macs List | OSXDaily
The MacOS Sierra Compatibility List | OSXDaily
MacBook Pro "Core 2 Duo" 2.53 15" (SD) Specs (Mid-2009 15", MC118LL/A, MacBookPro5,4, A1286, 2324*): EveryMac.com
Installing High Sierra on an Unsupported Mac - Mac Optimization Software Reviews
SOLVED: Sierra upgrade possible on a MBP mid 2009 - MacBook Pro 15" Unibody Mid 2009 - iFixit
Preparing a 2009 MacBook for macOS Sierra - YouTube
Installing MacOS Sierra on an unsupported Mac (2009 MacBook Pro 5,4) - YouTube
What system software can my Mac run? – JimmyTech
How well does MacOS High Sierra run on an unsupported Mac? - YouTube
15″ MacBook Pro (Mid 2009) | Low End Mac
Sold - 15" MacBook Pro Mid 2010 // $395 - Boulder Mac Repair
How to Upgrade Mac to macOS High Sierra | Trend Micro News
Identify your MacBook Pro model - Apple Support
How to Install macOS High Sierra - iFixit Repair Guide
macOS High Sierra (10.13) Unsupported Macs Thread | MacRumors Forums
