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% $Id:$ %
\fixme{This information is new and might contain errors. Please
\emph{always} check out the installation page in the wiki at
\wikilink{SansaE200Install} and the troubleshooting page at
\wikilink{SansaE200TroubleShooting} first. If you have any doubts
about installation, \emph{stop now!} Errors during the installation might
render your player useless!}
The installation of the bootloader is the most critical part of the
installation. Please make sure to read the instructions completely
first before doing any installation step. You \emph{need} to
prepare your \dap{} for dual boot as explained below as you
otherwise \emph{will not} have USB access to your player.
\begin{enumerate}
\item Save a copy of your original firmware onto your computer's hard drive.
You can obtain a firmware file from \url{http://daniel.haxx.se/sansa/mi4.html},
another way to obtain the file is to intercept the file during the firmware
upgrade.
\item Install a version of the mi4code program on your system.
You can get a windows binary from
\url{http://daniel.haxx.se/sansa/mi4code.html}.
\item Decrypt the mi4 firmware file with the following command
\begin{code}
mi4code decrypt -s SKU_E-PP5022.mi4 OF.bin
\end{code}
\item Copy the decrypted original firmware file \fname{OF.bin} to the
\fname{/SYSTEM} folder on your \dap{}. (This folder might be hidden).
\item Download the Rockbox bootloader from
\url{http://download.rockbox.org/bootloader/sandisk-sansa/}.
\item Copy the bootloader you just downloaded to the root directory
of your \dap{}.
\item Safely remove your \dap{} from the computer and then disconnect the
USB cable. This will reboot the \dap{}, then it will install the Rockbox
bootloader and reboot again into Rockbox.
\end{enumerate}
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