I guess 1-bit MMC = SDIO, sorry my bad. The phone for sure switches to wider bus after initial boot sequence, i haven't reversed this part, not sure
where it is, probably the bootrom. But during this initial chip inquiry is the golden opportunity to take control and off course hats off to X-Shadow for
the hack and implementation (!).
What version of the bootloader ? I have some old diss, i have ptr to a string at this location.
Originally Posted by .NetRolller 3D
Actually, the eMMC chip documentation shows that it fully supports 1-bit MMC (not SDIO, and not SPI) mode, and only switches to a higher bus width when explicitly requested to do so.
EDIT: Not very relevant, but open the Lumia 710 boot loader MBN in a hex editor, and go to address 0x1E490 for a good laugh. Or, if you have the Lumia 800 Qualcomm boot loader image, it's @ 0x1E52C.