Rsvr 04 won't start

hi guys need some input here

I have a mates bike and its an 04

it sat with no battery for over 6 months and the dash has reset itself to zero everything.

put a new battery in it

turn on the ignition key

and it primes the fuel.

all the lights on the dash light up then go out.

the rpm goes to 9 then back to zero

the EFI warning stays on.

Initially the side stand light stayed on but that has gone out now.

the neutral light does not stay on even tho the bike is in neutral.

the engine turns over on the starter but it does not fire.

the plugs have spark to them.

the engine will run if I spray ether in the air inlet.

other than that it wont fire up.

I've checked the connectors are all seated.

the neutral switch works as does the sidestand switch.

pulling in the clutch lever has no effect

It winds over with or without it pulled in.

I've tried to find the connector to put it in diagnostic mode but cant seem to see anything.

any ideas

cheers stu

fuses are fine

will look into the immobiliser

Is there still a connector for the diagnostics?

and where

the manual location is a no go

OK its not an immobiliser problem

dismanteled cleaned and checked ignition switch

checked most connectors

next ideas pls

haven't pulled a plug yet but the immobiliser light goes out as it should

It has spark.

the sidestand light is back on again.

I've pulled the battery half a dozen times so far :banghead

I clamped the return line from the injector rail in case the reg was leaky.

tomorrow I'll check the injectors spray ( there is a signal to them.)

and pull the plugs out.