Hey OPGod knows how much I have been waiting for this even before I owned 2017U Because I knew devs would struggle a lot on porting multimedia experience between the stock and the customAnyways I have some questions but before everything I like to clarify that I got a big upgrade (from S2/s3 mini/grand 2) to my luxurious Axon 7, I have never dealt with fastboot or ARM64 ever before so it'll be kinda hard for me1. Is this DB method have unified boot.img?? or simply have shared kernel??The main reason is that I need to flash a custom kernel on my secondary ROM, If that will mess up I will just replace RR's (my favorite ROM) boot.img before flashing or any possible way that works.2. Is there any way to have f2fs on the secondary ROM???(Like changing to f2fs first then flashing RR then using DB method to flash stock ROM or something as the guy mentioned above?partitioning may work??? Any other way? ) I mean the obvious reason is that we know how OP3's nand performance increased with f2fs.Long story short I need both f2fs and custom kernel for ultimate performance because sd820 seems good for heavy usage but I want more control for extreme situations.I'd like a confirming answer instead of a normal one due to the lack of experience with newer devices