Rockbox Technical Forums

Installation / Removal => Manual Installation => Apple - Installation/Removal => Topic started by: benny1133 on September 05, 2007, 12:20:26 AM

Title: Bad Checksum
Post by: benny1133 on September 05, 2007, 12:20:26 AM
I have a 60g 5th generation ipod. I followed the instructions severelly times and reinstalled rockbox more than once. Each time i get the error of bad checksum. Is their anything i can do to fix it? Maybe manually change the sum? please help
Title: Re: Bad Checksum
Post by: Llorean on September 05, 2007, 12:22:17 AM
Which files, exactly, have you downloaded?
Title: Re: Bad Checksum
Post by: benny1133 on September 05, 2007, 12:27:20 AM
I downloaded the ones for the 60/80g ipod
Title: Re: Bad Checksum
Post by: Llorean on September 05, 2007, 12:38:40 AM
I said "exactly". Bad checksum means either you accidentally downloaded the wrong one, or the file got corrupted while you were copying it.
Title: Re: Bad Checksum
Post by: linuxstb on September 05, 2007, 02:04:42 AM
Can you post the output of the bootloader?  i.e. the checksums that are displayed?
Title: Re: Bad Checksum
Post by: benny1133 on September 05, 2007, 02:00:17 PM
i downloaded the current build of the 60/80g ipod
and the message is as follows:

Rockbox boot loader
version 1.1
IPOD version: 0xFFFFFFFF
HTC426060G8CE00
Partition 1: 0x0B 57121 MB
loading Rockbox...
Length: 77F18
Checksum: 309F9A4
Modle name: ipco
Loading rockbox.iopd
sum: 309F766
Error!
can't load rockbox.ipod:
Bad checksum
Title: Re: Bad Checksum
Post by: Llorean on September 05, 2007, 02:02:55 PM
The build you downloaded is the iPod Color build. You've downloaded the wrong one.
Title: Re: Bad Checksum
Post by: benny1133 on September 05, 2007, 02:13:06 PM
ok i will try again but i'm pretty sure i clicked on the ipod video one
Title: Re: Bad Checksum
Post by: Llorean on September 05, 2007, 02:18:44 PM
Well, that "ipco" in there means "ipod color".
Title: Re: Bad Checksum
Post by: benny1133 on September 05, 2007, 02:20:44 PM
i removed the old rockbox installed the new one and got the same message with different numbers:

Rockbox boot loader
version 1.1
IPOD version: 0xFFFFFFFF
HTC426060G8CE00
Partition 1: 0x0B 57121 MB
loading Rockbox...
Length: 81E38
Checksum: 3466EBD
Modle name: ipvd
Loading rockbox.ipod
sum: 3466CFD
Error!
can't load rockbox.ipod:
Bad checksum
Title: Re: Bad Checksum
Post by: LambdaCalculus on September 05, 2007, 02:26:07 PM
Did you download the build for the 30GB models, or the one for the 60/80GB models? This is important to note.
Title: Re: Bad Checksum
Post by: benny1133 on September 05, 2007, 02:30:48 PM
i clicked on the 60/80 link....so i belive that i downloaded that one
Title: Re: Bad Checksum
Post by: pixelma on September 05, 2007, 02:42:36 PM
To use the 30GB build on an 60/80GB Ipod is also possible (if you accidentally downloaded that) maybe it could decrease battery life a bit. It doesn't cause any problems as the different way round, it just doesn't use all of the available RAM.
Title: Re: Bad Checksum
Post by: LambdaCalculus on September 05, 2007, 02:44:12 PM

To use the 30GB build on an 60/80GB Ipod is also possible


I've heard of this as well, but at the same time I've been told that using the exact build for your iPod video is always best.
Title: Re: Bad Checksum
Post by: benny1133 on September 05, 2007, 03:24:23 PM
but neither one works... any ideas
Title: Re: Bad Checksum
Post by: Llorean on September 05, 2007, 03:52:16 PM
Give http://www.rockbox.org/twiki/bin/view/Main/RockboxUtilityQt and see if it helps clear up your problems.