Good day all have set some enviroments in uboot that is on NAND:
(07:35:43 AM) alabd:  setenv mtdparts mtdparts=physmap-flash:-(nor)\;neo1973-nand:0x00040000(u-boot),0x00040000(u-boot_env),0x00800000(kernel),0x000a0000(splash),0x00040000(factory),0x04000000(system),0x0b6a0000(userdata)
(07:35:43 AM) alabd: and this is result of mtdparts command > http://pastebin.com/2hgCwDgz
(07:35:43 AM) alabd: but when want to sudo dfu-util -a userdata -R -D userdata.img
(07:35:43 AM) alabd: dfu says No such Alternate Setting: "userdata"
(07:35:51 AM) alabd: how to fix it