TV technician helping fix LG TV firmware update errors

Steve H.

Expert ★★★★★ 27,853 satisfied customers

Specialities: LG webOS TVs, firmware/software updates, USB update files, Wi-Fi & Ethernet issues, HDMI/ARC, streaming apps & smart features

LG TV firmware update failed or stuck — webOS, USB and network issues

Technician avatar Technician
Hey! We’ll figure out why your LG TV firmware update failed and get webOS updated without bricking anything. A few quick details so we don’t guess:
• Exact LG TV model (from the label on the back or in Settings → General → About This TV)?
• Are you updating the software over the internet (Settings → Support → Software Update) or using a USB firmware file?
• What error do you see: “Update failed”, “Unable to connect to update server”, “Update not completed, please try again”, or is the LG TV software update stuck at 0% / 95%?
• Does the TV still turn on normally, or is it stuck on a webOS update screen or LG logo/boot loop?
The more we know, the easier it is to fix an LG TV update error instead of trying risky resets that could make it worse.
Customer
It’s a 55″ LG webOS TV. I tried updating through the normal menu (Settings > Support > Software Update). The download finishes, then it reboots, and I get “Update failed”. Sometimes it says “update not completed, please try again later”. Now every time I turn it on I get prompted to update and it fails again. Apps are buggy and I want the new firmware, but the LG TV software update is not working.
Technician avatar Technician
Got it — classic LG TV update error where webOS downloads the file but can’t install it cleanly.
Common causes when an LG TV firmware update failed:
• Flaky Wi-Fi while the update is downloading — file gets corrupted so install fails at 0–5% or 90–99%.
• Not enough internal storage or leftover partial firmware files from previous attempts.
• Wrong region / outdated firmware on LG’s servers for that exact model.
• Minor glitch in webOS (cache, system process stuck) after the first reboot.

We’ll go step by step:
1) Stabilise the network and retry the online update safely.
2) If it still fails, we’ll use a manual USB firmware update from LG’s support site for your exact model.
3) Clean up any leftover files and, if needed, do a webOS reset without losing everything.
That usually fixes a webOS TV software update failed situation without a service call.
Customer
The TV is on Wi-Fi, fairly far from the router. When the update fails I also see “unable to connect to update server” sometimes, even though Netflix still works. The progress bar sometimes gets to like 95%, then says the update failed and reverts. How do I stop my LG smart TV firmware update from failing every time?
Technician avatar Technician
Perfect context. Let’s stabilise things so the LG TV software update has the best chance to succeed.
Step 1 — Give the TV a rock-solid connection
1) If possible, run an Ethernet cable from the router to the TV and temporarily use wired instead of Wi-Fi.
2) If Ethernet isn’t possible, move the router closer or temporarily move the TV closer for the update. Avoid guest networks/VPN routers.
3) On the LG TV go to Settings → Network, forget the current Wi-Fi, then reconnect to the main 2.4/5 GHz SSID with a good signal.

Step 2 — Reboot TV and router
• Turn the TV off, unplug it from power for a full 60 seconds, then plug it back in.
• Reboot the router as well, wait until it’s fully online, then power the TV back on.

Step 3 — Retry the update once
• Go to Settings → Support → Software Update → Check for Updates and let it download again.
If the LG TV firmware update is still stuck or fails after this clean attempt, the next move is usually a manual USB firmware update using the file from LG’s website.
Customer
I can try Ethernet later, but I’d prefer something more “certain” than Wi-Fi. I’ve seen people talk about updating LG TV firmware via USB. Can I do that in my case, and will it fix the update loop?
Technician avatar Technician
Yes — a manual USB firmware update is exactly what we use when the online LG TV software update keeps failing.
Step 4 — Download the correct firmware for your exact model
1) On a computer, go to LG’s official support site for your country.
2) Enter your TV model number (e.g. OLED55C1PUB, 55UN7300, etc.) and open the Software & Drivers / Downloads section.
3) Download the latest firmware / software update (webOS) file for that model — usually a big .zip file.

Step 5 — Prepare the USB stick the way LG expects
1) Use a small USB drive (ideally 4–16 GB) and format it as FAT32.
2) Unzip the downloaded file. Inside you’ll typically see a folder called LG_DTV or similar.
3) Copy that folder to the root of the USB drive (not inside any other folder). The TV looks specifically for that.

Step 6 — Run the LG TV USB firmware update
1) With the TV on, plug the USB into a USB port on the TV directly (not via a hub).
2) After a few seconds, a message should pop up saying new firmware has been found. Choose “Install”.
3) Don’t press any buttons and do not unplug power during this process — the TV will reboot itself when finished.

This often clears the “LG TV firmware update failed” loop because the TV installs a clean, verified file instead of a half-downloaded one.
Customer
I tried a USB update once before on another TV and it got stuck at 0%. What if the LG TV USB firmware update doesn’t start, or says the file is invalid? I don’t want to break this one.
Technician avatar Technician
Good question — if the USB firmware update for LG TV doesn’t start, it’s almost always one of these:
• The TV model doesn’t match the firmware file (different region/suffix).
• The archive wasn’t unzipped correctly, or the LG_DTV folder is not in the root of the USB drive.
• The USB is exFAT/NTFS instead of FAT32, or too large/old for the TV to read reliably.

Step 7 — Double-check the firmware & USB layout
• Confirm the exact model and country on the LG support page before downloading.
• Re-format the USB as FAT32, copy only the LG_DTV folder to the root (no other firmware folders).
• Try a different USB port on the TV or a different USB stick if it still doesn’t detect it.

If you follow that precisely, the TV should detect the firmware and you’ll avoid “LG TV firmware update file is invalid” errors. We can also walk through the LG support page with you in chat so you’re sure you’ve grabbed the right file.
Customer
Let’s say the update finally goes through. Another time I had an LG TV where the update completed, but after that it kept rebooting randomly and some apps crashed. What if this update makes webOS unstable after updating?
Technician avatar Technician
Great point — sometimes the LG TV update finishes but causes weird behaviour afterwards.
Step 8 — Clean up webOS after a successful update
• Unplug the TV from power for 60–90 seconds to clear any leftover cache.
• Go to Settings → Support → TV Management → “Restart TV” or “Quick Start+” and disable quick start temporarily so it does a full boot.

Step 9 — Reset apps and, if needed, reset webOS settings
• Reinstall or update streaming apps that crash after the firmware change.
• If the TV is still unstable, use Settings → System → Reset to Initial Settings (names vary by webOS version). This keeps the firmware but refreshes system settings.

These steps usually stabilise a webOS TV that reboots after a firmware update. Only if it still crashes or won’t boot fully do we talk about deeper service-level options.
Customer
Is there anything I can do so I don’t have to fight with every single update? I don’t want my LG smart TV firmware update failing every few months.
Technician avatar Technician
Absolutely — we can “future-proof” things so the next LG TV software update is less painful.
Preventive setup for LG TV firmware updates
• Keep the TV on a stable home network; avoid guest networks and powerline adapters during updates.
• Don’t run big downloads/streaming on other devices when webOS is updating — give the firmware update first priority.
• Make sure there’s some free internal storage by deleting unused apps before a large update.
• If you know a particular firmware build is buggy, disable auto-updates for a while and wait for a fixed version before updating.
• When you see “LG TV firmware update available”, run it when you have 20–30 minutes and you’re not in the middle of a movie, so you can watch for any errors.
With that in place, you greatly reduce the chances of getting stuck on “LG TV firmware update failed” screens.
Customer
What if the worst happens and the LG TV won’t turn on after an update? My friend had a TV stuck on the LG logo after a failed firmware update.
Technician avatar Technician
That’s the “worst-case” version of an LG TV firmware update failed issue, but there are still a few safe things to try before calling it bricked:
• Fully unplug the TV from power and all HDMI/USB devices for 2–3 minutes, then plug power back in and try powering on again.
• Try a different wall outlet (no surge protector) just to rule out power weirdness.
• If the TV gets to webOS sometimes, attempt a Reset to Initial Settings while it’s stable.
• Some models can recover using a USB firmware file even when they’re stuck in a loop, but it has to be done very carefully with the correct file.

If the set never gets past the LG logo or shows a permanent update error screen, that’s when we check warranty and service options. We can help you gather the right photos, logs and model/serial details so LG support takes it seriously.
Customer
Understood. For now I’ll try the wired connection and then the USB update with the correct file. If that works and I reset the apps, that should stop the LG TV update failed message from looping, right?
Technician avatar Technician
Exactly. Once a clean LG TV firmware update is installed (ideally via stable Ethernet or a correct USB file) and you reboot/reset webOS, the update loop should disappear and apps should behave better.

Summary: when LG TV firmware update fails or gets stuck, first stabilise the network and retry from Settings → Support → Software Update. If it still errors out, download the correct firmware for your exact model from LG’s website, prepare a FAT32 USB with the LG_DTV folder and run a manual USB update. After the update, power-cycle the TV, reinstall affected apps and, if needed, reset webOS settings. Not sure about the right firmware file or steps for your model? Open the chat and an expert will walk you through it safely.

Quick answer: the accepted fix

Accepted fix when an LG TV firmware update failed: give the TV a stable connection (ideally Ethernet), reboot both TV and router, then retry the webOS update from Settings → Support → Software Update. If it still fails or gets stuck, download the correct firmware for your exact LG TV model from LG’s support site, put the LG_DTV folder on a FAT32 USB drive and run a manual USB firmware update from the TV. Power-cycle the TV afterwards and reinstall any apps that misbehave.

Why LG TV firmware updates fail or get stuck

Most LG TV firmware update failed messages come down to three things: unstable internet, corrupted download files or model/region mismatches. If Wi-Fi drops, the webOS software update may complete the download but fail during verification, leaving you with “update not completed” or a software update stuck at 0% or 95%. Using the wrong firmware file (different suffix or country) during a USB update can also cause “file invalid” errors. Less often, a buggy firmware build or low internal storage on the TV can make the LG TV update error appear even when your network is fine.

How to confirm your LG TV firmware update really worked

After running a successful update, you want to be sure your LG smart TV is truly on the new version and stable. Go to Settings → Support → Software Update (or About This TV) and confirm the software version number matches the latest one from LG’s support page for your model. Test a few streaming apps, HDMI inputs and picture modes to check for crashes or reboots. If the TV no longer shows “firmware update failed” prompts, doesn’t get stuck on the LG logo and apps feel smoother, your LG TV firmware/software update is likely fully applied and healthy.

LG TV firmware update failed — quick troubleshooting tips

Most cases are fixed by stabilising the network and using a clean USB firmware file from LG.

Quick path: plug the TV into your router with Ethernet if possible, then retry the built-in LG TV software update under Settings → Support. If the update still errors out, download the latest firmware for your exact model from LG’s support site, copy the LG_DTV folder to a FAT32 USB drive and perform a manual USB firmware update. After the update completes, unplug the TV for a minute, then turn it back on and reinstall any apps that misbehave. This sequence fixes most “LG TV firmware update failed” or “update not completed” issues at home.

Disclaimer: This information is AI-generated and intended for general guidance only. For advice specific to your LG TV model, region and firmware version, please consult a verified expert on Whizz-Tech before making decisions.

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FAQ

Why did my LG TV firmware update fail right after downloading?

Most of the time, an LG TV firmware update failed message after download points to a corrupted file or unstable connection during the download. The TV may appear to finish, then fail verification and show “update not completed, please try again later”. Using a stable Ethernet connection and retrying, or installing a clean firmware file via USB, usually fixes it.

How do I update my LG smart TV firmware via USB?

On a computer, go to LG’s support site, enter your TV’s exact model number and download the latest firmware file. Format a USB drive to FAT32, unzip the download and place the LG_DTV folder in the root of the USB. Plug the USB into the TV while it’s on; you should see a prompt to install the LG TV USB firmware update. Follow the on-screen instructions and don’t unplug power during the process.

What should I do if my LG TV is stuck on the LG logo after an update?

If the LG TV won’t boot after a firmware update, unplug the TV from power and all devices for 2–3 minutes, then try powering it on again. If it remains stuck on the logo or update screen, you may need service-level recovery or a carefully prepared USB firmware file. In that situation, check your warranty and contact LG support or a qualified technician.

Can a failed LG TV firmware update damage my TV permanently?

Most LG TV update errors don’t cause permanent damage — they just leave the TV on an older firmware until a successful update runs. However, interrupting the TV’s power during the actual firmware install can risk corruption. That’s why it’s important to keep power stable and follow safe recovery steps if an update fails, rather than repeatedly forcing resets.

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