The Rockbox Sansa e200R/Rhapsody Port
If the USB options on your player are "MSC" and "MTP" it's non-R, if they're "Rhapsody" and "Plays for Sure" then it's R.
There are special instructions for the installation procedure on the R versions of the e200 series here.
Here follows a summary of the facts and knowledge we have gathered so far about the R models and how they differ from the vanilla e200 models:
- The R model bootloader loads the mi4 and actually verifies that the 160 bit digital signature is fine before proceeding. Thus upgrading to a custom firmware is next to impossible without replacing the bootloader.
- The bootloader itself does not allow the bootloader to be replaced (using recovery mode).
- The bootloader is stored in the same place as in the vanilla e200 model, and is the same size.
- The mi4 image is somewhat differently encoded and encrypted than the vanilla e200 mi4, but we have figured that out already. Users have managed to run the R model firmware on a vanilla e200 (given some manual adjusting).
- We managed to extract the bootloader code/image from the R models using e200tool in manufacture mode, simply due to the fact that it has a copy of the bootloader in RAM at the time, at the same place in memory as the vanilla models have.
- We can load custom code to the player with e200tool and run it, so we could extract further info and do testing that way.
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