Can't reboot into download/recovery mode

Tried searching for a recent thread but I couldn't find one. So I got an S7 from T-Mobile today and was able to successfully root, I flashed it with ODIN but then saw it didn't have TWRP recovery. I tried flashing it, but unfortunately now I can't reboot into recovery/download mode. Is there any fix to this? Also any fix to reboots forgetting wi-fi passwords?

Any help is appreciated.

password protection on boot? (before! download/recovery mode)

Hi
I want to lock my phone, not only password protected system and encrytion of my data/files , I want that a thief will get mad and have no fun with it
=> For that (only) a password boot protection against download mode and recovery mode is the way.
Seems to me that this function is missing ?!

True?



(sm-g-900F and sm-g-900FD with CM13)