Rockbox Development > New Ports
SAMSUNG YH-920
Bagder:
"The build" being what build? You mean the output from a Rockbox H10 bootloader build?
Did you then decrypt that and re-encrypt it with the YH920 key?
You may need to pay some attention to these facts:
#1 - the only YH920 mi4 file I've dissected used the older and smaller mi4 header so you may need to do that too (with "mi4code build -2")
#2 - the YH920 has a minor difference in the mi4 file mentioned on the mi4 file format page that might have significance (or not). It has not been that thoroughly investigated since you're about the first one trying anything on such a device!
pyro_maniac:
--- Quote from: Bagder on October 29, 2008, 06:52:05 PM ---"The build" being what build? You mean the output from a Rockbox H10 bootloader build?
--- End quote ---
Oh yes sorry. I took the rockbox.mi4 file that comes out of the H10 build.
--- Quote from: Bagder on October 29, 2008, 06:52:05 PM ---Did you then decrypt that and re-encrypt it with the YH920 key?
--- End quote ---
No but i will do so later.
/EDIT: The key is always the same. It takes always the default key.
--- Code: ---mi4code decrypt rockbox.mi4 rockbox-enc.mi4
mi4code v1.1.2-DSA (c) by MrH 2008
Secondary label end offset 'default' (0xec)
Decrypted ok with key 'default' (20d36cc0 10e8c07d c0e7dcaa 107eb080)
--- End code ---
Is that the right way or is there a misstake in my acting?
--- Quote from: Bagder on October 29, 2008, 06:52:05 PM ---#1 - the only YH920 mi4 file I've dissected used the older and smaller mi4 header so you may need to do that too (with "mi4code build -2")
--- End quote ---
Ok that later, too. I will post all results of that.
/EDIT: What should i do with that header?
--- Quote from: Bagder on October 29, 2008, 06:52:05 PM ---#2 - the YH920 has a minor difference in the mi4 file mentioned on the mi4 file format page that might have significance (or not). It has not been that thoroughly investigated since you're about the first one trying anything on such a device!
--- End quote ---
That looked different to me because i've found some posts here, so i thought there were some other tryings. Maybe with your help i can get a running version. I really like to learn it.
Bagder:
--- Quote ---Maybe with your help i can get a running version.
--- End quote ---
I'm only helping you trying to get the H10 version adapted to get accepted by the YH920.
There's really only a very very slim chance that it'll actually show or do anything on the target as I doubt they are that identical hw-wise.
pyro_maniac:
Is there any possibility to raise the chance?
Bagder:
--- Quote from: pyro_maniac on October 29, 2008, 07:27:31 PM ---Is there any possibility to raise the chance?
--- End quote ---
As you must've seen on the NewPort wiki page, the taking apart, scanning pcb and identifying hw steps are all prior to writing a bootloader...
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