Rockbox Development > New Ports
SAMSUNG YH-920
dado84:
--- Quote from: pyro_maniac on October 26, 2009, 04:24:46 AM ---
--- 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 !!! :)
--- End quote ---
What is ment with janus bootloader?
--- End quote ---
Usually the 820 is shipped with 2.10 bootloader or similar;
after the "mtp" update using the "820firmwareupdate_mtp.exe" update file, the original bootloader is overwritten by the v5.00JN version and I haven't found no way to downgrade to the original one.
this update is useful since after that you can use the 820 as a MTP device loading music using a simple copy & paste!
unfortunately with that bootloader no one of the rockbox loader from samsung port was working.
is the same problem posted by the user shadoxx that have the same bootloader.
( http://forums.rockbox.org/index.php?topic=21794.0 )
--- Quote from: kugel. link=topic=6135.msg157503#msg157503 ---The YH820 bootloader renamed to YH820_J.mi4 does not work?
--- End quote ---
Nope.
Unfortunately with all that bootloader the only thing that came out was :
"Connect to PC and repair firmware with recovery utility"
probably the mi4 code for the janus firmware is different from the normal one
the loader I used is 64kb while yh820/920 normal are 47/50 Kb around.
("janus" mean a DRM tech from microsoft , this is what i found reading around )
pyro_maniac:
For the 920 there was a rollback tool for MTP update. Have you found one for the 820? On the global download center there seems to be none but even no MTP upgrade.
Nichlas seems to have the same problem like you with his 925.
dado84:
nope, i've searched in every samsung download site but for the 820 there isn't a rollback utility, I've found only the one for the 925.
pyro_maniac:
and where did you find the update?
and rockbox is running now with your h10 bootloader?
dado84:
--- Quote from: pyro_maniac on October 26, 2009, 01:04:11 PM ---and where did you find the update?
and rockbox is running now with your h10 bootloader?
--- End quote ---
do you mean the Janus update for the 820 ?
you can download it from here: http://rapidshare.com/files/7999029/820firmwareupgrade_for_MTP.exe.html
but be aware that there is no rollback possibility !!!!!!
regarding rockbox; yes. I'm using daily build for the 820 (I trided the 920 one but doesn't start) and I'm using the h10 20gb firmware loader ;)
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