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=== installing tools for backup and root ===There are a number of guides online many of which offer downloads for the necessary tools including TWRP and Magisk. They often offer them from unknown or their own server and they are often outdated versions. Do yourself a favor and get the latest versions from the developer sites.* TWRP is at https://twrp.me/Devices/Google/* Magisk Manager is at https://magiskmanager.com/3. TWRP 3.0.2 custom recovery https://www.teamandroid.com/2016/12/13/install-twrp-3-0-2-recovery-on-google-pixel-complete-guide/<small>TWRP 3.0.2 custom recovery https://www.teamandroid.com/2016/12/13/install-twrp-3-0-2-recovery-on-google-pixel-complete-guide/ download TWRP from https://twrp.me/Devices/Google/ choose Google Pixel (sailfish) -> https://dl.twrp.me/sailfish/ yields -> Download twrp-pixel-installer-sailfish-3.3.0-0.zipdownload TWRP from https://twrp.me/Devices/Google/ choose Google Pixel (sailfish) -> https://dl.twrp.me/sailfish/ yields -> Download twrp-pixel-installer-sailfish-3.3.0-0.zip 4. download MagiskManager-v7.2.0.apk from https://magiskmanager.com/ download MagiskManager-v7.2.0.apk from https://magiskmanager.com/ </small>