Rockbox Development > New Ports

SAMSUNG YH-920

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Nichlas:
Got this from AronVanAmmers, after he tried a copy of the system folder from OF:

"Cheers, the OF works! Finally I have my FM radio back. This device has become so much cooler today."

So one more has got their radio back on Janus firmware.

This new bootloader is great!

AronVanAmmers:
Hi,

Indeed I'm a happy Samsung YH-925GS Rockbox user with restored FM radio functionality :)

Now that I've finished most of the Rockbox games (looove MazezaM and codebreaker :)), I've tried running Rockboy on the YH-925GS. I know Rockboy isn't core functionality and results vary, but I want to see what I can get it to do.

Running Rockbox r24117-091226.

Results (on simple greyscale games like Super Mario, Tetris and Prince of Persia):

- games are playable
- Keys work: up/down/left/right, rec=start, fwd=select, play=A, rev=B (or maybe the other way around)
- speed is about 50% of what it should be
- sound is distorted (it seems to play for about half a second, then silence, then play again, etc., with some ticks in between)
- can't reach the Rockboy menu, so can't try things like changing the palette or frameskip. I've tried the hold switch, combinations of keys and holding keys for a longer time.

Anyone tried this and got better results? How can I reach the Rockboy menu?

Cheers,

Aron

richardash1981:
Is anyone still working on this? I've successfully got my S/H YH-925 running Rockbox following the wiki, but there are a couple of things which wouldn't harm for some attention:

* I can't get the original firmware boot to work, it always loads Rockbox. I'm a bit confused about boot loader vs main firmware, as I get the Samsung "Boot Loader" splash screen followed by Rockbox loading, and I'm not sure when to press left

* This player (a UK-bought YH-925 with Samsung on the case) definitely has an FM radio which works with the v2 firmware (this player has not been updated to Janus and I intend to keep it that way!), I haven't yet tested the patch to see if it can be got to work

* I suspect the backlight of never going out, which eats up the battery. I certainly can't see the screen getting brighter when I press the buttons

If internal voltage traces are needed have a 'scope and can take it apart to find out what the original firmware does (once I get it to boot it). Ditto if the contents of the original 925 SYSTEM directory (Build 2.13?) are useful I can post the tarball somewhere.

saratoga:

--- Quote from: richardash1981 on September 15, 2010, 04:51:37 PM ---Is anyone still working on this?

--- End quote ---

Since you're the first person to post in this thread in almost a year, probably not. 

jimbo70:

--- Quote from: dado84 on October 25, 2009, 10:30:23 PM ---I own a 820 with janus bootloader, and finally this night I've been booting rockbox !!! :)
to let it boot it I had to use the Iriver 20 Gb bootloader renamed as YH820_J.mi4
( http://download.rockbox.org/bootloader/iriver/H10_20GC.mi4 )
and now finally it worksss ! :)

--- End quote ---

Dado, you're a damn genius!!!  ;D
It works like a charm!!
I just registered to the forum to thank you for this simple solution!

ps
please developers, clean up the page dedicated to the YH 820 model, there are vague and conflicting instructions, just point them to Dado's workaround.

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