Sorry to answer so late… but I was away and very busy… And yes if you erase all the sectors of the flash Memory (1-11) you will delete, at the same time, 2 things, that will render your printer un usable, with the original bootloader…
Displaying MCU memory content, from 0x0800C000 to 0x0800C01F
0x0800C000 66 6C 61 73 68 66 6F 72 67 65 31 32 80 55 09 8D flashforge12.U…
0x0800C010 0A 06 38 35 92 CE C9 CC 37 97 03 D0 00 FF 00 FF …85…7…
the first one is the Plain TEXT verification flashforge12, this one is easy to replace…
the other one: The 16 bytes (or if you prefer 96 bits) following the flashforge12… are an encrypted hash, generated using your PUID, (Unique Identification number) different in every cortex M4… So when the bootloader starts, it display some image son the screen, and then, verify for the presence of the ‘flashforge12’, and then verify that the nest 96 bits are the ones generated by the PUID, from it’s permanent memory, using encryption algorithm and then it also verify the last 4 bytes of the listed memory I have included, 00 FF 00FF, to know if he is supposed to start the actual firmware, or update the current one, by erasing sector (4 to 11) and using a specific file on the internal SD CARD into the dir SYS named either dremel.bin or dreamer.bin depending on the model… it also decrypt on the fly between each block he reads from sd card, and then write it in the flash memory… You have probably already understand, that providing a “un encrypted” bin file to this bootloader, will result on a flash memory full of random codes, since he will decrypt something non encrypted… and way before you can do something stupid like that, all the security features describe before have many chances to have failed the verification, and the bootloader jump in an infinite loop… (it blocks, any other code execution)… I provide all the information in details, and soon it will be on the website, but if you didn’t commit one of the errors above, contact me on my facebook, or my email, or my prone or…
facebook: daniel massicotte (crazy monkey)
facebook Group: Druid Firmware
email daniel.massicotte@yandex.com
email druidfirmware@gmail.com
Phone (514) 451 1886 (SMS and phone)
You can also find a lot of info on reprap.org, under Druid Firmware
And soon on the website www.druid3d.com
You can take a peek at the website on another domain (but do not try to download or buy from the store) because it is still under construction…
( test domain is www.druidfirmware.com )