THIS IS A PRECOMPILED BUILD / FIRMWARE FLASH AND IS SPECIFICALLY TO BE FLASHED AS FIRMWARE ON A PROXMARK 3 V4, USING ANY PC WITH LINUX OS ENVIRONMENT. IT SHOULD BE ALSO COMPILED WITH THE BUILD LOADED VIA TERMUX ANDROID ENVIRONMENT TO RUN THE ANDROID APP CALLED RFIDTOOLS. BTADDON PKG OUGHT TO BE LOADED AS WELL AS STANDALONE PROJECT IN MAKEFILE. IT WORKS IF U KNOW THE STEPS. THANKS. RFID Tools Android Flash for Proxmark3