Alternative Firmware (Debian Jessie, Synology DSM6)

What happend?
mtd blok 0 is “read-only” by default. Its not possible to overwrite this partition. (Its a Uboot / bootloader)

Nope. Only DSM5. I stop developing DSM6.
https://fox-exe.ru/WDMyCloud/WDMyCloud-Gen1/Synology_DSM/