Wiki > Main > SansaC100Port (compare)
Difference: SansaC100Port (r19 vs. r18)
Hold select/center button on USB connect.
Holding the lower-volume (the leftward one) button, the "options"/bottom of circle button, and pressing menu for several seconds will enable a production test mode which can be used to test the various parts of the player. It seems to me that all of the basic information we need is available in this application (button triggers, LCD info, etc). The strings used by this mode can be found in the player.rom hex file.
http://www.sendspace.com/file/7ge9cr - Sansa c140/c150 Updater. American firmware updater to v22.214.171.124a. Does not work if the player already has a v2 firmware on it.
To upgrade the firmware, the file player.rom needs to be copied to the root of the device. Upon reboot, the user is prompted to upgrade. If yes is selected, the firmware is upgraded and the file deleted from the FAT partition. A reboot is required to actually start the new firmware - the existing version will continue to run. Based on the observation that the existing firmware continues to run after a firmware update, it would seem that the firmware itself is executing from RAM, rather than executing in place from a ROM.
You can safely upload to and execute code from RAM using tcctool (pre-built Windows binary here: http://download.rockbox.org/utils/tcctool/).
000x1 - USB Plug
CategoryFrontpage: Sandisk Sansa c100 Port Index [New Ports]
r19 - 10 Nov 2008 - 02:10:50 - NicolasPennequinRevision r19 - 10 Nov 2008 - 02:10 - NicolasPennequin
Revision r18 - 29 Jul 2008 - 23:09 - MarcGuay
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