Hi, I have an xbox trying to fix and all appeared well except the HDD was starting to fail freezing games taking a long time to load etc. so tried to put another hard drive in from another box and also reformatted and set up a new drive to see if this would work. When I put in the either drive it starts off with E106 error message reset xbox and tried the updates via USB and E101 and back again and so and so forth. Tried system cache clearing by powering down. There is still some life in the old hard drive so put that back in and can get the Xbox to boot up. I then tried to see if it would update using this hard drive and this also came up with an E101 error even though I have the latest update on the USB stick. Tried the pressing A button during the update and it is still refusing. Thought the versions on the HDD for both the one that boots up and the one that doesn’t was different but they are not both on the current version. Tried OSU2 and 3 but these both failed straight away rather than after a couple of percent. (Assumption is that the box knew these were not correct for it) Found The USB drive I was using was corrupted and fixed that and recopied the files over. Still didn’t work so tried the same type of interface with another SSD not HDD for the update and same result.
Read a different method to clear the system cache, Unplug all cables from the box, hold down the power button for 5 seconds to clear any power in the system and then it worked with the new USB drive I set up for the OSU1 update. Either I had not cleared the cache properly or the USB drive was corrupted or some combination of both caused hours of problems. Got the new drive working now.