Notice: AT added some functions so it's larger than before, if you want to compile it, please compile it as 1024KB or larger flash in compilation STEP 5. 1ˇ˘compile options (1) COMPILE Possible value: gcc Default value: If not set, use xt-xcc by default. (2) BOOT Possible value: none/old/new none: no need boot old: use boot_v1.1 new: use boot_v1.2+ Default value: none (3) APP Possible value: 0/1/2 0: original mode, generate eagle.app.v6.flash.bin and eagle.app.v6.irom0text.bin 1: generate user1 2: generate user2 Default value: 0 (3) SPI_SPEED Possible value: 20/26.7/40/80 Default value: 40 (4) SPI_MODE Possible value: QIO/QOUT/DIO/DOUT Default value: QIO (4) SPI_SIZE Possible value: 0/2/3/4/5/6 Default value: 0 For example: make COMPILE=gcc BOOT=new APP=1 SPI_SPEED=40 SPI_MODE=QIO SPI_SIZE_MAP=0 2ˇ˘You can also use gen_misc to make and generate specific bin you needed. Linux: ./gen_misc.sh Windows: gen_misc.bat Follow the tips and steps.