Robin Hoods Playground

Hello,
Could some of the more experienced people help me with a problem i have please?
I am trying to flash 2 X-Box 360's for a friend of mine and they both have the Liteon 74850C drives in them.I took the cases off to flash them and put them to one side until my friend sent me the drive keys for them.
My wife moved the cases while she made something to eat and thinks she may have mixed them up.I now do not know which key will be for which drive.
Is there a way to test the key on the drive to make sure it is going to be flashed to the motherboard it came from?
I am going to await a reply from somebody that knows what they are doing before i do anything because i do not want to brick them for him.
Thank you for any help and advice you may be able to offer.
All the best.
ODGE.

if you already have the drive keys for them there is no worries, just flash a console with 1 of the keys and test a game in it.
if it doesnt work you know you have the wrong key and you can then reflash it using the other key.

exactly what leedo said, if you run into any problems then come back here

Thank you very much for both of you getting back to me.
I appreciate you taking the time to reply and help me out.
Thank you.
ODGE.

no problem lad, if you have any troubles, get back to us straight away

When in doubt, re-dump the flash then update. Try it in both boxes, it is bound to work in one of them. By default, the second drive goes in the only box left.