RETRO The Spectrum User Manual page 58

Chapter 13
While installing, The Spectrum will display a progress bar which will fill up from left to
right as the update proceeds.
Note: It is important not to remove the USB stick or power from The Spectrum
while the update is in process.
When the update is complete, The Spectrum will reboot and return you to
the game carousel. If you wish to verify that the update has been applied, go to
Options Advanced options
that is displayed.
58
System information and check the Build version