I'd check to see if the entire file gets uploaded. All releases (?) up 
to rb19  have a little problem with the ramdisk space.
See this post for a solution:

http://www.m0n0.ch/wall/list/?action=show_msg&actionargs%5B%5D=8&actionargs%5B%5D=27


--
Thomas Hertz

> I prepare Hard disks for use with monowall by using phydiskwrite 
> utility provided my Manuel Kasper.  However, when i try to upgrade my 
> system to a new version, something goes wrong and i can't upgrade it.  
> I can upload the image file via a ftp client, but when i click in 
> "upgrade firmware" option in webgui i get one of this errors:
>
> Image corrupt
> File Not Found
> Cannot decompress image file, unexpected end of file.
>
> Theres a secure way but using phydiskwrite to prepare the hard disk 
> for using in monowall (Linux based preparation, for example)?
>
> Thanks in advance.
>
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