#Safepal tutorial. SafePal S1 not detecting upgrade.bin: causes and fixes

SafePal S1 not detecting upgrade.bin? You downloaded the firmware, copied the file to the device and selected “Upgrade,” but the S1 reports that it cannot find the firmware file. Or the update simply does not start. In most cases, this does not mean that the device is faulty or that the file is corrupted. The most common cause is so simple that it is easy to overlook: the filename.

Below, we cover every common reason why the S1 may fail to detect upgrade.bin and explain what to do in each case. The steps are based on the official SafePal instructions. As of September 24, 2026, the latest firmware version is V1.0.81, released on August 10, 2026.

If your SafePal S1 is not detecting upgrade.bin, check the problem in this order: the exact filename, where the file was copied, whether the S1 virtual disk appears, and the USB connection. This makes it easier to separate a simple update mistake from a situation where the device itself may need troubleshooting.

SafePal S1 not detecting upgrade.bin: common causes

The file is not named upgrade.bin

This is the most common cause, and SafePal specifically warns about it in its instructions. If you downloaded the firmware more than once, your browser may keep the existing file and save another copy with an added number, such as upgrade.bin(1), upgrade.bin(2), and so on. The device looks specifically for a file named upgrade.bin. It will not recognise a file with any other name, so the firmware will not be detected.

What to do: open your Downloads folder, delete the older copies and rename the new file to upgrade.bin, without brackets or numbers. Then copy it to the device again.

The file was copied to the wrong location

The firmware file must be placed on the S1 virtual disk, not in an arbitrary folder on your computer. After you put the device into upgrade mode and connect it with a cable, a new drive appears on the computer, similar to a standard USB flash drive. The upgrade.bin file must be copied directly to the root of that drive.

You do not need to open or run the file. Simply copy it to the virtual disk and select “Upgrade” on the device. If the file remains on your desktop, in the Downloads folder or anywhere else on the computer, the SafePal S1 will not detect it.

The virtual disk does not appear

If no new drive appears after you connect the S1 to your computer, there is nowhere to copy the firmware file. SafePal lists two common causes in its firmware upgrade guidance.

• The device has not been put into upgrade mode. Your computer recognizes the S1 as a drive only after you manually select the option to enter upgrade mode on the device. Connecting the cable alone is not enough.
• There is a problem with the USB connection. Try another cable and another USB port. The cable must support data transfer, not just charging.

SafePal firmware updates are not supported on mobile devices. You need a Windows PC or Mac to complete the process. The firmware cannot be installed from a phone or tablet.

SafePal S1 not detecting upgrade.bin: quick checklist

Before repeating the entire firmware update, check only the items that directly affect whether upgrade.bin is detected:

• the file is named exactly upgrade.bin, with no (1), (2), or other additions;
• upgrade.bin is copied to the root of the SafePal S1 virtual disk;
• the device is in Upgrade Mode and your computer sees it as a separate drive;
• the USB cable supports data transfer, not charging only.

If all of these checks pass but the S1 still does not detect upgrade.bin, go through the complete update procedure again using our separate guide: How to update SafePal firmware on S1, S1 Pro and X1. That guide covers the firmware download, Upgrade Mode, the virtual disk, copying the file, and starting the update.

How to verify that the downloaded file is genuine

Download firmware only from the official SafePal upgrade page. The S1 checks firmware authenticity before installation, and SafePal also publishes a SHA-256 value for an additional file check. We keep the full download and verification procedure in the main SafePal firmware update guide so the same steps are not duplicated here.

When the problem may be a hardware fault

If you have followed every step, confirmed that the filename is correct, tested the cable and USB port and entered upgrade mode, but the device still cannot detect the firmware or the virtual disk never appears, the problem may be hardware-related.

SafePal recommends recording a video of the entire update process and submitting a support request. The video allows the support team to see exactly where the process stops.

If you purchased the device from us, contact Lwallet first. We provide free support to our customers: we will go through the process with you, determine whether the issue is caused by a missed step or a genuine hardware fault and, if it is covered by warranty, explain how to arrange a return or replacement.

Your funds are not stored inside the SafePal S1 itself. If the device needs to be replaced, you can restore access to the wallet on a compatible device using the correctly recorded seed phrase.

SafePal S1 not detecting upgrade.bin: conclusion

If your SafePal S1 still does not detect upgrade.bin, start with the filename, the root of the virtual disk, Upgrade Mode, and the USB cable. There is no need to repeat the entire firmware-update tutorial in this article because the full procedure is covered separately. If the virtual disk still does not appear with another cable and USB port, or a correctly named file is still not detected after a fresh attempt, move on to device diagnostics and SafePal support.

Where to buy and where to get help

Firmware and hardware issues can be reported through official SafePal support. If the device was purchased from Lwallet, we provide free assistance to our customers.

If you need a new SafePal S1 or another model, you can order directly from the official SafePal store or from Lwallet. We offer local delivery throughout Ukraine, payment in Ukrainian hryvnia, no international customs delays and professional technical support. We sell only genuine devices. The choice is yours.