chalk46

oh yeah, I’m sure that’ll work 👍
about as effective as a mystical incantation

and even then, Android is mostly open source.
I’ve personally updated the kernel to my Amazon Fire tablet (and believe me, the 3.18 branch doesn’t contain as many security backports as they’d have you believe)

There’s always mega.io
it should be safe so long as you don’t share it with everyone. There’s a daily download quota of like 4 or 5 gigs
you could also just use Google drive