He clicked "Open File" and selected the custom firmware.

Eject or unmount the drive from your computer and unplug the USB cable.

. It primarily involves transferring a specific binary file to the device’s internal storage while it is connected to a computer. Step-by-Step Update Procedure

: If the device fails to boot after an update, you may need to manually format the internal SD card. This requires opening the device, removing the card, and formatting it to FAT32 on a PC before reinstalling the firmware.

Connect the USB cable from the back of the oscilloscope to an open USB port on your computer.

The FNIRSI 1014D is one of the most popular budget-friendly digital oscilloscopes on the market. It packs dual-channel 100MHz bandwidth, a 1GS/s sampling rate, and a large 7-inch display into a portable package. However, like any sophisticated piece of electronics, its performance depends heavily on the software running it—the firmware.

: Remove any existing files from this drive to ensure a clean installation environment.

A "bricked" FNIRSI 1014D (stuck on logo, black screen, or constant reboot) is often recoverable. The bootloader remains intact even if the main firmware is corrupted. Here is the recovery procedure:

: Visit the official FNIRSI Support Page to find the latest version. The file is typically named FSI-1014.bin .

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Crucially, there are multiple hardware revisions of the FNIRSI 1014D. Using the wrong firmware will cause the update to fail. To check your version: