What does a 'critical device error' mean on an e-reader?
Answer
A critical device error on an e-reader usually points to a software or storage problem rather than a screen or hardware failure, and a restart is the usual first step before anything else.
Before you start: stop right away if…
- A reset will remove any content stored only on the device rather than in the account's cloud library.
Follow these steps
Write down the exact error code
Note the full error code and any other text shown on the screen, since this affects which official troubleshooting page applies.
You should see: You have the exact wording available to reference or search.
Restart the device
Hold the power button for the length of time specified in the device's manual, usually around 20 to 40 seconds, until the screen goes blank, then let it restart on its own.
You should see: The device either restarts normally or shows the same error again.
Check for a pending software update
If the device restarts, check its settings menu for a pending software update and install it if one is available.
You should see: The device updates and the error does not return, or the error reappears.
Use the official reset option if the error persists
If the error continues after a restart and update check, use the device manufacturer's official reset instructions, after confirming that purchased books can be re-downloaded from the account.
You should see: The device resets and returns to initial setup, ready to sign back in.
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Extra tips
What to look for: The exact error code or message shown on the e-reader's screen, and whether other features like the home screen or settings still work
Before you change anything: Note the exact error code shown on the screen. Check whether the device still responds to buttons or a restart at all. Confirm any purchased books are tied to an account and can be re-downloaded later. Never share your account password or verification codes with anyone.