Several Xbox One users have reported that they are getting system error on the screen E 100 00000703 80910002 after they downloaded the Xbox One’s day one update. As per Microsoft support site for Xbox One, Error 100 means
“This indicates that there was an issue while updating your hardware, and that you’ll need to submit your console for a repair.”
E100 appears to be a serious issue, however some users are saying that they eventually got it fixed and were able to install updates successfully. For some users, they ran into download loop.
Here in this article we will see some troubleshooting steps. Check one any of these are helpful to you.
Solution 1: Do a Power Cycle
Sometimes doing a simple power cycle could help fix the error. Some users have also reported that after doing a power cycle they were able to install the update successfully. To do Power cycle follow the steps below.
On your Xbox one, press and hold down the white power button for 10 seconds to turn it off.
Now unplug the power cord and wait for 10 seconds.
Plug back in the power cord
Turn the console back on.
Try to doing the update again.
You are the lucky one if this fixes the issue for you.
Solution 2: Reset the console to Factory Default Settings.
For some users completely erasing and restoring Xbox one has fixed this issue. Restoring Xbox one to factory default setting will erase all accounts, setting, home xbox association and saved games. One you are connected with the service, your xbox live will automatically sync with your console. Anything that is not synced with xbox live will be lost. In order to reset console to factory default setting, follow below steps.
Press the left button on the directional pad to open the Menu at the left of the screen.
Scroll down to gear icon and select “All Settings” by pressing A button
Select System -> “Console Info & Updates”
Select Reset Console
You will be asked if you want “Reset and remove everything” or “Reset and Keep my games & apps”
Select “Reset and remove everything”
The Xbox one will be reset to Factory Default Settings. Now you can check if your issue is fixed.
Solution 3: Disconnect Ethernet cable and reboot
Some users reported that disconnecting Ethernet cable and rebooting Xbox One has solved their issue. You can surely give a try to this one.
Open the home screen by double tapping the Xbox button
Scroll left on the Home screen to open the guide
Select Restart Console
Select Yes to Confirm
Solution 4: Restoring NAND
If none of the above works, you can try restoring NAND if you have NAND backup available. You can restore NAND with the help of 360 Flash Tool and make sure you have CPU key available with you. Follow below steps to restore the NAND
Open the NAND in 360 Flash Tool and check that any bad blocks are remapped.
Use CPU Key in 360 Flash tool and check that it decrypts the keyvault data on the right.
Now go into easy ggbuild.
Edit the my360\cpukey.txt with your CPU key.
Copy your good NAND over as nanddump.bin.
Run easy ggbuild and select your console type.
You will then be asked if you want to build a Glitch Hack image or a Retail Image.
Select Retail Image.
Flash the resulting image back to your console.
Please let us know if any one of the above method helped you to fix the issue. If there is any other method that you have tried to get rid of this issue do let us know in comments. We will be happy to include it as a part of solution. If nothing helps, I guess the only option with you is to contact Microsoft support and get your hardware replaced.