[HTC EVO 3D] twistedumbrella:
And i'm not saying this to be an ass, but if you use

on init
write /sys/class/android_usb/android0/iSerial $ro.serialno
write /sys/class/android_usb/android0/f_rndis/manufacturer HTC
write /sys/class/android_usb/android0/f_rndis/vendorID 0bb4
write /sys/class/android_usb/android0/f_rndis/wceis 1

on boot
write /sys/class/android_usb/android0/iManufacturer $ro.product.manufacturer
write /sys/class/android_usb/android0/iProduct $ro.product.model

on property:sys.usb.config=mtp
write /sys/class/android_usb/android0/enable 0
write /sys/class/android_usb/android0/idVendor 0bb4
write /sys/class/android_usb/android0/idProduct 685c
write /sys/class/android_usb/android0/functions $sys.usb.config
write /sys/class/android_usb/android0/enable 1
setprop sys.usb.state $sys.usb.config

on property:sys.usb.config=mtp,adb
write /sys/class/android_usb/android0/enable 0
write /sys/class/android_usb/android0/idVendor 0bb4
write /sys/class/android_usb/android0/idProduct 6860
write /sys/class/android_usb/android0/functions $sys.usb.config
write /sys/class/android_usb/android0/enable 1
start adbd
setprop sys.usb.state $sys.usb.config

on property:sys.usb.config=rndis
write /sys/class/android_usb/android0/enable 0
write /sys/class/android_usb/android0/idVendor 0bb4
write /sys/class/android_usb/android0/idProduct 6863
write /sys/class/android_usb/android0/functions $sys.usb.config
write /sys/class/android_usb/android0/bDeviceClass 224
write /sys/class/android_usb/android0/enable 1
setprop sys.usb.state $sys.usb.config

on property:sys.usb.config=rndis,adb
write /sys/class/android_usb/android0/enable 0
write /sys/class/android_usb/android0/idVendor 0bb4
write /sys/class/android_usb/android0/idProduct 6864
write /sys/class/android_usb/android0/functions $sys.usb.config
write /sys/class/android_usb/android0/bDeviceClass 224
write /sys/class/android_usb/android0/enable 1
start adbd
setprop sys.usb.state $sys.usb.config

on property:sys.usb.config=ptp
write /sys/class/android_usb/android0/enable 0
write /sys/class/android_usb/android0/idVendor 0bb4
write /sys/class/android_usb/android0/idProduct 6865
write /sys/class/android_usb/android0/functions $sys.usb.config
write /sys/class/android_usb/android0/enable 1
setprop sys.usb.state $sys.usb.config

on property:sys.usb.config=ptp,adb
write /sys/class/android_usb/android0/enable 0
write /sys/class/android_usb/android0/idVendor 0bb4
write /sys/class/android_usb/android0/idProduct 6866
write /sys/class/android_usb/android0/functions $sys.usb.config
write /sys/class/android_usb/android0/enable 1
start adbd
setprop sys.usb.state $sys.usb.config

on property:sys.usb.config=rndis,dm
write /sys/class/android_usb/android0/enable 0
write /sys/class/android_usb/android0/idVendor 0bb4
write /sys/class/android_usb/android0/idProduct 6862
write /sys/class/android_usb/android0/functions $sys.usb.config
write /sys/class/android_usb/android0/enable 1
setprop sys.usb.state $sys.usb.config

on property:sys.usb.config=mass_storage
write /sys/class/android_usb/android0/enable 0
write /sys/class/android_usb/android0/idVendor 0bb4
write /sys/class/android_usb/android0/idProduct 0c86
write /sys/class/android_usb/android0/functions $sys.usb.config
write /sys/class/android_usb/android0/enable 1
setprop sys.usb.state $sys.usb.config

on property:sys.usb.config=mass_storage,adb
write /sys/class/android_usb/android0/enable 0
write /sys/class/android_usb/android0/idVendor 0bb4
write /sys/class/android_usb/android0/idProduct 0c86
write /sys/class/android_usb/android0/functions $sys.usb.config
write /sys/class/android_usb/android0/enable 1
start adbd
setprop sys.usb.state $sys.usb.config

##Adding this in because adb is being removed from persist.sys.usb.config after booting

on property:persist.service.adb.enable=1
start adbd

on property:persist.service.adb.enable=0
stop adbd

in the init.usb.rc for rls1 then do the same for rls2. One will work as an MTP device and one will not, and not because it works for mass storage either. Some people really do tell you this stuff to help you...