I have a Vsmart Joy 1 phone, running VOS/Android 8.1.0
I found a port of TWRP recovery for Vsmart Joy 1s here (translation), but it says "Android 9.0 VOS..."
Does this mean that I should/have to upgrade to VOS/Android 9.0 to be able to use TWRP properly (the end goal is to root the phone)? Or, can I flash it on my phone as is, without upgrading?