Install OnePlus 3T official Oxygen OS 3.5.3 and later [Download stock firmware & OTA]
SultanXDA Explains Unified ROM Approach on the OnePlus 3/3T
OnePlus on Twitter: "Which OnePlus 3T color is the shade of your soul? Take this quiz to find out! https://t.co/nViP1xivuw https://t.co/r0o7NkXPoG" / Twitter
The Best ROMs, Kernels, and Mods for the OnePlus 3
Install OnePlus 3/3T Pixel Experience Pie 9.0 Official ROM - Android Infotech
OnePlus 3 update: August security update released as OxygenOS 9.0.5
Unbrick and Restore OnePlus 3T to Stock Oxygen OS 4.0.3 - DroidViews