mkamsboot --------- A tool to inject a bootloader into a Sansa V2 (AMS) firmware file. Usage ----- mkamsboot is an original Sansa firmware file obtained from the Sansa forums for example : http://forums.sandisk.com/sansa/?category.id=devices is the code you want to execute (a rockbox bootloader), previously scrambled with tools/scramble utility. is the resulting firmware file which you'll have to copy on your Sansa player. See "Firmware filenames". Supported models ---------------- Sansa Clip : firmware version starting with "01." Sansa Clip+ : firmware version starting with "01." Sansa Clipv2: firmware version starting with "02." Sansa Fuze : firmware version starting with "01." Sansa E200v2: firmware version starting with "03." Sansa C200v2: firmware version starting with "03." Sansa M200v4: firmware version starting with "4." Firmware filenames ------------------ For the firmware upgrade to happen, the firmware has to be named specially: clip v2 : m30pa.bin clip : m300a.bin clip+ : clppa.bin fuze : fuzea.bin e200v2 : e200pa.bin c200v2 : c200pa.bin m200v4 : m200a.bin Dual-Boot --------- The purpose of this program is to provide dual-boot between the original firmware and the new (rockbox) firmware. By default the player will boot into the new firmware. To boot into the Original Firmware, you need to press the Left key. ***Note : on the c200v2 you need to press the Right key. The player will boot into the Original Firmware as well if it is powered up by inserting an usb cable. ***Note : on the m200v4 powering up by usb will cause booting into the new firmware Hacking ------- See comments in mkamsboot.c and dualboot/dualboot.S for more information.