[What is max SD card size?]

I use the  twinduck firmware/num lock,Caps.or scroll activated and a 8GB micro SD card and it takes about 30 +- seconds to be seen by Windows OS on most machines. I myself prefer this firmware because less traces and of course no need to download any files and minimally touch main HDD.

[Android OTG Ducky Flashing!?]

Will there's a will there's a way..Best get coding........

[Extracted SAM..... How do I open? I am newbie I know :)]

http://ophcrack.sourceforge.net/

[Inject.bin back to plain text]

online decoder https://ducktoolkit.com/decoder/

[Ducky Source Code re-use (License model and Legality)]

I hope this person was contacted about his question if not makes the Hak5 team look a bit uncaring..

[Screen capture payload result in an error]

Please show payload script so others may help by seeing any other possible script errors..

[New things]

Lol, sorry just to funny....I guess you're not a real or hobbyist pentester....