Rockbox Development > Starting Development and Compiling

problem compiling bootloader for H340 on linux, SYSFONT_WIDTH undeclared

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Llorean:
As I said, there is a very real chance of custom compiled bootloaders bricking these players. You should not try using a bootloader you compile yourself unless you have a way to recover a bricked H300.

luissifer:
Thanks for your comments.

I didn't know about the A-B hold while plugging in, that's quite useful!
But yeah it will be nice to have this possibility to get into usb charging mode but not in transfer mode when you start the player as well.
Let me know lwizard, if you get any success compiling the bootloader.
I must have some problems with my environment as I can't manage to compile either normal or just the bootloader...

Okay it sounds risky to compile the bootloader but isn't it still possible to replace the hex file by a functioning one if there are any issues??

Cheers

nls:

--- Quote from: luissifer on June 03, 2009, 11:26:30 PM ---Okay it sounds risky to compile the bootloader but isn't it still possible to replace the hex file by a functioning one if there are any issues??

--- End quote ---

Short answer: No, flash a non working bootloader and your player is bricked.
Long answer: it's _possible_ with a specialised piece of hardware known as a BDM wiggler and some soldering and of course the skills to use that hardware.

luissifer:
ah okay, interesting comment!
thanks for that

GodEater:
Just to clarify here :

This is why we get a little annoyed with people on our forums referring to their players as "bricked", when in reality they really aren't. For a great deal of the players that Rockbox runs on, it's not possible to brick them by installing bad bootloaders or bad rockbox builds - there's always a way to recover them, therefore the player was never bricked in the first place. Just because you can't currently load the original firmware on it, or Rockbox, does not mean it is bricked.

The H3xx and H1xx iRiver players are however entirely possible to break so badly you CANNOT fix them without having to open them up, connect them to some *very* specialist hardware (that costs a lot of money), AND have the smarts to *use* that hardware. *That* is properly bricked.

Therefore we really, really urge people NOT to build and use their own bootloaders for either of these players. The only people qualified to do so are the very small number of developers who own the recovery hardware I mentioned above in case of a failure.

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