E100 code confirmation help please

Hi guys

Can anyone give me some confirmation on E100 codes.

To cut a long story short I bought a faulty xbox one x from a guy at work for £45. He told me it had a new disc drive fitted around a year ago but has been working fine until a few weeks ago. Ive checked the daughter board and its definitely had the board resoldered on the the new drive as there not factory solder joints.

Iv fixed plenty of E106/102 and so on with a new hard drive.

Anyway he sold it to me as it was stuck in the E106 update loop. So I put a new HDD in with all the new os files and like most x Box faults it verifies the update turns itself off as it should but before it installs it keeps throwing E100 0000706 80070002. Now I'm not sure if this is HDD related or BD rom related. I know the E100 with 10000 at the end are BD rom related but this is 70002 and I haven't come across this code before.

Is anyone in the know what this code is?

Thanks guys.