How to upgrade mcu firmware is outdated now 2021?


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Plus more... Read on to learn everything you need lớn know about solving Ledger MCU Firmware update issues.

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Ledger devices are some of the safest và most reliable hardware wallet devices on the market.

They offer a variety of features, but safety, security and convenience are the most important ones.

However, they too encounter errors sometimes, & with constant software updates & upgrades, most users are bound to see one or two eventually.

This article focuses on one of the most common ones.

MCU Firmware Errors

As Ledger updates its firmware often.

Info: Updating your Ledger device to lớn the latest version is just something that device owners have sầu lớn bởi vì. If ignored, the device might not work as intended. However, many users report that their Ledger Nano S gets stuông chồng on the update.

Often this problem appears in the size of a message where the Ledger device shows an error: “MCU firmware is outdated” (the other most comtháng one being “MCU Firmware is not genuine”).

This is especially aggravating, since updating the firmware is exactly what you are trying lớn vì chưng.

Here are 9 solutions listed from most effective solution lớn least that (almost always) solve this firmware update issue on Ledger Wallets:

1. The Button Holding Method

This solution to the “MCU firmware is outdated” problem was officially posted by Ledger itself. It is a simple fix that anyone can follow.

The steps khổng lồ the solution go like this:With you Ledger connected, open Ledger Live sầu và select ‘Settings’ gear icon in the top right

Select Help

Scroll to lớn the bottom & select ‘Repair’ on the last cống phẩm called “Repair your ledger device”

Select “MCU outdated” option out of the menu and select ‘Repair’

Follow the directions on Ledger Live sầu repair tool by connecting your Ledger Nano lớn your PC or Mac and hold down the left control button for 5 seconds.

Look for the bootloader screen. It will look like this:

Now just follow the instructions on Ledger Live và the problem should be fixed. If not, try the other solutons listed below.

2. Cđại bại All Unnecessary Applications

We have sầu heard reports that other applications running on your machine may prevent the firmware update from completing successfully.

Info: This is especially common among mỏi users running really intrusive sầu antivi khuẩn software such as Bitdefender or those who run a VPN.

You might also want to lớn try closing other crypto-related apps. We have sầu seen several reports of Parity, Geth, and Mist causing this issue.

Advice: This recommendation also includes closing Chrome and/or Firefox, as their plugins can also prsự kiện proper updating of firmware.

The best way lớn see all currently running applications (even the hidden background operations) & cđại bại them is lớn run Windows Task manager.

To vị that, press Ctrl+Alt+Delete, and you will see this window

Select Task manager, and you will see this window

Under the processes tab, select one of the running apps that you bởi not need for your firmware update, & select ‘End Task’ on the bottom right hvà corner of Task Manager.

Repeat this step until all unnecessary apps are closed completely.

Advice: Do not be afraid khổng lồ kết thúc background processes as well so long as you know what they are AND you know they are not crucial to updating your Ledger.

We are trying lớn eliminate as many variables as possible to lớn solve sầu our firmware update issue, so the more processes we can kill now, the better.

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In short: cchiến bại all unnecessary applications, especially:

anti-virut software VPNs (Virtual private Networks) crypto lớn apps và desktop wallets Chrome and/or Firefox (or any website browser)

Once complete, try lớn update again.

3. Make Sure Ledger Live is Updated

Cthảm bại và re-open Ledger Live sầu.

If a xanh update bar appears at the top, it is out of date.

Select “Install now” và restart Ledger Live sầu.

Try khổng lồ update Ledger firmware again.

4. Try a Different USB Cable

Even though the USB cable will most likely not be the cause of this problem, it’s easy lớn switch it out & see if that helps.

Try substituting your current USB cable with a different one.


5. Switch USB Ports

Some users have reported that merely switching khổng lồ a different USB port on their computer has fixed this issue, và they were able to complete their firmware update successfully.

Keep trying until all ports have sầu been tried (since some ports may be USB2, while others may be USB3, etc).


6. Make Sure Your USB Drivers are Updated

One more USB solution: if you don’t have sầu up-to-date USB drivers, this could obviously cause issues.

Info: This is assuming you aren"t using the Nano X"s bluetooth capability, in which case, you"d need to lớn make sure your bluetooth drivers are up to date.

To update your USB drivers on your Mac or Windows device, follow the tutorial below; it should be roughly similar to update bluetooth drivers for the Ledger Nano X.

How to lớn Update Your Drivers on Mac:

Cliông xã the táo inhỏ on the upper left corner of the screen Select “Software Update” If updates are needed, it will ask you if you want to lớn install any updates that are available If not, it will tell you your software is up vì chưng date

How to lớn Update Your Drivers on Windows:

Use tìm kiếm to find Device Manager

Scroll down the menu until you see Universal Serial Bus Controllers Double clichồng it to lớn display all of your USB ports Look for any that have sầu a yellow exclamation next khổng lồ them (as seen below), and right click them to select “Update Driver Software”
For more information on updating drivers on Windows machines, check out this guide.

7. Wait

For this solution, the idea is that the Ledger servers are overloaded with requests.

Info: By waiting, you give your device time to lớn wait in line và receive the firmware update.

Here is what you do:

Unplug the Ledger device Run through the normal update procedures When the ledger tells you to lớn unplug the device và plug it bachồng in again, wait 10-15 minutes before you unplug it If this fails, repeat these steps several times as we have sầu had many customers report that this method worked after more than one attempt

8. Restart Your Computer

It’s a solution as old as computers themselves:

‘Have sầu you tried turning it off và turning it back on again?’

9. Try All of the Above On Another Computer

If none of these solutions work, it may be time to ask yourself if the computer you are using is the problem.

Advice: If it is, it"s probably not something you want lớn be using with your Ledger anyway.

The only way to lớn find out for sure, though, is to try all of the above sầu steps on another computer.


We hope this guide has been helpful in solving your firmware issue with your Ledger.

There is another famous firmware issue called “MCU Firmware is Not Genuine”. Read our guide on how khổng lồ fix that issue if you come across it in the future.

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And…if these firmware issues freak you out & you haven’t backed up your Ledger yet, we suggest you vày so by putting your recovery seed on a Billfodl. You can buy one by clicking the button below.