Note I am now on stock 4.4 (including stock recovery/kernel etc.) but previously i had custom recovery and same error.
- tried rebooting into bootloader from recovery when I had philz and/or TWRP - would just boot into the OS
- tried power + button up (i.e. reverse of booting into recovery) - same, boots into OS
- tried quick boot root app - same, boots into OS
Not hugely concerned since I could get into recovery lol but why is it I can't get into bootloader/fastboot mode? What if the OS is broken and I need to ADB something?
Note I rooted/TWRP/PHilzed and went custom for awhile, then I made my own zip using below thread and a full kdz and flashed back to stock including recovery/kernel/baseband (I wanted to go back to 100% stock).