Samsung Dryer dn Error — Firmware Download Fix

What it means

Samsung dryer dn isn't an error — it's a status display telling you a firmware download to the dryer is in progress.
Samsung's exact wording: 'Do not unplug or shut off power to the dryer while this code is displayed.'
The dryer will restart itself automatically when the install completes.
This typically happens on Wi-Fi-connected SmartThings dryers when Samsung pushes a firmware update.

Affected Models

Samsung DVE45 / DVE50 / DVE52 series electric dryers
Samsung DVG45 / DVG50 / DVG52 series gas dryers
Samsung DV9000T / DV9100T Smart Dial series
Samsung BESPOKE AI laundry dryers
Samsung FlexDry and WashTower units (shared dryer module)

Common Causes

Scheduled firmware update from Samsung pushed via SmartThings
Manual firmware update started from the SmartThings app
Update interrupted previously and restarted on next power-on
Initial firmware setup after a new install or factory reset
Background update during inactivity (off-hours)

How to Fix It

Leave the dryer powered on and wait.

Samsung is explicit: 'Do not unplug or shut off power to the dryer while this code is displayed.'
Interrupting a firmware download mid-install can corrupt the firmware and require a service visit to reflash.
The display shows dn for as long as the download and install takes — typically 5 to 15 minutes.
Confirm Wi-Fi is connected.

If your dryer has been showing dn for longer than expected, check that the Wi-Fi indicator is still showing connected.
A dropped Wi-Fi connection mid-download stalls the dn state.
The dryer recovers automatically when the connection returns.
Don't open the door or press buttons.

While dn is displayed, the control panel doesn't respond normally.
Don't try to start cycles, switch to other functions, or open the door repeatedly.
Just let the update finish.
Power cycle only if dn is stuck.

If dn has been displayed for more than 30 minutes with no progress (no blinking dot, no status change), and only then, you may safely power-cycle: unplug for 1 to 5 minutes, then plug back in.
The dryer will restart and either resume the download or revert to the previous working firmware.
If it still won't get past dn after a power cycle, call Samsung service — they can reflash the firmware remotely or via a USB stick on-site.

When to Call a Professional

Never call service for dn — it's a normal status, not a fault.
Wait until the dryer restarts itself.
If the dryer has been showing dn for more than 30 minutes with no progress, then power-cycle it and try again — but only after waiting at least that long.

Frequently Asked Questions

Can I disable automatic firmware updates so dn never appears?

Yes — in the SmartThings app, open your dryer's settings and look for 'Automatic Firmware Update' or 'Software Update'.
Toggling it off prevents background updates and dn from appearing.
However, this also means you'll miss Samsung's security patches and feature improvements, so most users leave it on and just let dn complete when it appears.
Updates typically push at off-peak hours like overnight to minimise disruption.