I had a problem in installing rockbox bootloader (hence title) could you please help me what I did is below

Connect your Sansa in manufacturing mode (turn on hold and then hold down the center button while connecting USB cable).
that went okUsing the wizard, tell Windows to install the drivers from a specific location, and tell it the location that you unzipped e200tool.zip (e.g. C:\e200tool).
ok that when ok Then, tell Windows to install "0781-0720.inf".
it does not ask for this it only asks for libusb0.sys, libusb0.dll which is needed for installationNow, open up a command prompt, enter cd c:\e200tool_dir (where e200tool_dir is where you unzipped e200tool.zip).
when i do this it says that it can't find it or some thing like that so i type cd c:\e200tool and it seems to be ok Now, execute e200tool recover BL_SD_boardSupportSD.rom
did that but all it does is install the previous driver
Now, open up a command prompt, enter cd c:\e200tool_dir (where e200tool_dir is where you unzipped e200tool.zip).
did thatnow, execute e200tool recover BL_SD_boardSupportSD.rom while holding rec on the Sansa until it boots into recovery mode
says something about a connection timeout and write error and it does not boot into recovery mode.