How to Update Rooted Pixel 3 & XL to December Security Update [PQ1A.006][fastboot]

Lots of bug fixes in this build! An early Christmas I guess. RAM management, speaker buzz and others may have been improved or fixed! See the bulletin for more details: http://bit.ly/2rnz2GC ∆ IMPORTANT ∆ !! PLEASE READ HERE BEFORE STARTING !! ********************************************** I am not responsible for any damage caused or any data lost. Please make sure you understand the procedure and also make backups of anything important! Join us on Discord:   / discord   ▼Requirements! Unlocked Bootloader ▼ Timestamps! [Downloads] 00:15 SDK Platform Tools 00:33 Google Factory Images 00:43 TWRP - Custom Recovery 00:54 Magisk 17.3 or higher 01:07 Checking our Downloads [Setup] 01:28 Extract Platform Tools (adb & fastboot) 01:41 Extract Factory Image 02:26 Open CMD/Terminal inside platform-tools folder 03:05 Copy flashables to your phone. [Update] 04:02 Reboot into Bootloader 04:24 fastboot devices 04:38 fastboot flash bootloader 04:51 fastboot reboot-bootloader 05:16 fastboot flash radio 05:29 fastboot reboot-bootloader 05:46 fastboot --skip-reboot update 06:51 fastboot boot (TWRP image) [Re-Rooting] 08:31 Flash TWRP Installer (optional) 08:16 Flash Magisk [Post Update] 09:09 Looking at Magisk 09:53 Final notes ▼Links Google USB Drivers (Windows): http://bit.ly/21kUlUP Tutorial on installing drivers:    • Install Google USB Drivers for Pixels & Re...   Android SDK Platform Tools: http://bit.ly/2weoivd TWRP: 🚨 If you want to install TWRP, flash that FIRST, then flash Magisk. The Edge Sense Module may have be also causing this. Please update your modules before updating. Pixel 3: https://twrp.me/google/googlepixel3.html Pixel 3 XL: https://twrp.me/google/googlepixel3xl... Google Factory Images: http://bit.ly/1lULnwU Magisk Beta: http://bit.ly/2ikrvTD ▼More links! Website: https://squabbi.github.io/ Twitter:   / squabbikong   Donate to me via PayPal, any donation is much appreciated :^) : https://www.paypal.me/squabbi Thanks to AsuraGFX for the fantastic intro: http://bit.ly/2BVm7yT Thanks for watching! Any questions? Ask them in the comments!