Win10 Mobile RS2 preview version 14926 upgrade error code 800703ed how to do

On September 16th, Microsoft pushed the Win10 Mobile RS2 Quick Preview version 14926 yesterday. Many users reported an upgrade error. Microsoft officially gave a temporary solution.

The specific error code is 800703ed. Jason, a member of the Microsoft Windows Insider team, gave the following solution: Remove the SD card of the phone and try to install the version again. In addition, he also added a note:
“ There is currently no one hundred percent solution, we are dealing with this issue, and your feedback will be very helpful. ”
The following 14926 version of the other known issues
• Lumia650 may fail to install, error code 0x80188308
• can not be closed by sliding the operation center in the blank area
• mobile hotspot may not be available Use, need to restart the phone to solve the problem
• The input keyboard of the Pin code login interface may disappear, the restart can not solve the problem, the phone can be re-usable by hard reset
• Some devices may not be able to use the SIM card Hard reset can solve the problem
If you encounter the problem that you can't use SIM card or can't log in to the phone through Pin code after upgrading this version, you can only solve it through hard reset. Please backup the data in advance.
How to hard reset WP phone
At the same time press and hold the volume-and power button for about 10 seconds, the phone will vibrate, then release your finger and quickly press and hold the volume - until you see an exclamation point on the phone screen, then press in order Volume +, Volume -, Power button, Volume -, the phone will reset, this will clear the phone data.