No you will need to softkick the 3.1Roms then! it will work quoite fine but id suggest getting 3.1roms instead they are not that expensive. Another thing to note is what CPU is in your a3000? an original 030/25mhz will be slow with 3.9! better go install 3.1 then and build upon that with OS hacks etc (wich is more or less what 3.5/9 is a collection of.