Fnirsi-138 Pro Firmware Update Today

Officially, the firmware upgrade process is only supported on Windows 10 and above .

Reality: Bandwidth is hardware-limited by the analog front-end (MXT2088 chip). Firmware cannot change this. The 138 Pro is a 50MHz scope with 100Msps sampling. No firmware update will change that. fnirsi-138 pro firmware update

or similar format) and paste it into the "FNIRSI-138 Pro" drive folder. Officially, the firmware upgrade process is only supported

: You will need a standard USB Type-C cable that supports data transfer. The 138 Pro is a 50MHz scope with 100Msps sampling

To update the firmware on your digital oscilloscope, you typically use its built-in USB analog U-disk mode . This process allows you to update the device by simply dragging and dropping the new firmware file onto it from a computer, similar to using a flash drive. Preparation

Check the main FNIRSI forum thread dedicated to the 138 Pro, where hardware engineers and hobbyists regularly share custom tweaks and beta firmware releases.

: If you notice a baseline (0V) offset after updating, unplug the probe and USB cable, press , and select to run an automatic calibration. Official Downloads : Firmware files and manuals can be found on the FNIRSI Manuals & Firmware Downloads page Device Specifications Specification Sampling Rate Voltage Range PWM Output 0–80kHz, 0–100% duty cycle 2.4-inch LCD ( FNIRSI-138 PRO Handheld Digital Oscilloscope Manual