I have tried to update my SP404 to OS 1.05, i copied the two files in to the smart card (i did it using my pc and the MPC1000 card reader to do this)
When i switched the power on, it started to countdown, but it stopped to 2 and FE7 message appeared.....now when i turn my SP on, it gives an Err message...any possibility to solve this?
I used 3 different cards, i can only update the os from 1 of them...this is strange...any advice??

I dont know. Your best bet is to call roland. They will def have an answer.

were you using a pc? You can't update the 404 from a mac.

Are you sure that the cards you used are the ones rolands wants you to use?

bad news my friend....is an mother error...you must go to roland service...i know that because when i buy my sp-404 in a few days i see the similar error...(FE0) is FE and number zero...yours seven....and in roland argentina give me a new sp and told me (mother error...must change the mother)

then...never have a problem....

sorry 4 my english...hope you understand me.