Samsung Galaxy S3 Tab

Galaxy Tab S3 is a 10 inch (9.7") tablet released in 2017. 
 Installing TWRP 
 
 To install TWRP on the device it's best to use this chap's release and install via Heimdall: 
 apt-get install heimdall-flash 
 Once you have the files ready to go, put the tablet into download mode with Power + Vol Down + Home (hold for 10 seconds). 
 
 heimdall flash --RECOVERY ./Downloads/twrp-3.6.0_9-0-gts3lwifi.img --no-reboot
 
 
 It's important to now reboot straight into recovery so that the old recovery partition is not recovered - Power + Vol Up + Home 
 Swipe to install TWRP 
 
 LineageOS 
 
 Use LineageOS 19 this release is most stable 
 Using NikGApps 12.1 (SL) 
 From TWRP install the zip files.