How to Flash the Latest ROM on the Samsung Galaxy S2 I9100 (No PC Needed) [Tutorial]

Alternative method to flash Android 9.0 / LineageOS 16.0 onto a Galaxy S2 I9100 without the use of a computer!

This full tutorial applies to the Samsung Galaxy S2 I9100, I9100m, I9100t, and I9100p (no NFC)
DO NOT ATTEMPT ON ANY OTHER VARIANT

Any Android 7.0, 7.1, 7.1.1 – Nougat, 8.0, 8.1 – Oreo, 9.0 – Pie / Cyanogenmod (LineageOS) 14.0, 14.1, 15.0, 15.1, 16.0 ROM can be flashed using this method.

************ FILES TO DOWNLOAD: ************

TWRP 2.8.7
https://drive.google.com/file/d/1dtmPtfgrwGNZdTcpV7_z8f3maRZDde8X/view?usp=sharing

Isorec TWRP
https://drive.google.com/file/d/1Bq3KNvnwX1bni3k5fAW5618rRmmadwaT/view?usp=sharing

Odin Mobile
https://mega.nz/#!pcRC3KwZ!Wq_DbtgNEpcMWJHTyYnGhwmxmh3YWUB3ui41TjAT-so

Lanchon Repit
https://drive.google.com/file/d/1SZZy2nlwaZh2tHhM_iAk7pesmJkcLVn7/view?usp=sharing

Lanchon Kernel
https://drive.google.com/file/d/1yQACuiObxaaEtGkC1KkHIPrBC_qJQUbf/view?usp=sharing

Kingo Root
https://mega.nz/#!YQBEXCDK!NQ4sZqe2ykzBVbPQY938fIBr1o6kMrUTEAlHRCXedO8

Open Gapps (use Arm only)
https://opengapps.org/

LineageOS Nougat
https://forum.xda-developers.com/galaxy-s2/development-derivatives/rom-t3555834

Lineage Oreo
https://forum.xda-developers.com/galaxy-s2/development-derivatives/rom-lineageos-15-0-t3674567

Lineage Pie
https://forum.xda-developers.com/galaxy-s2/development-derivatives/pie-i9100-t3850588