Upgrade firmware instructions:
1 Open the FNIRSIUSBMeter upgrade tool.

2 When the meter is off, press the middle button to access
the PC online port, it will display the connected, device
model, and device firmware version.

3 Click OPEN and choose to upgrade the firmware.

4 Click START to start the firmware upgrade. After the
upgrade is completed, the meter will automatically restart
and enter the main interfac

USB Tester USB Voltage Meter FNB48 PD Trigger Voltmeter USB 3.0 Voltage and Current Tester DC 4-24V 6.5A USB C Multimeter PPS Fast Charging Protocol Capacity Tester QC2.0 3.0

Firmware Upgrade Tool :
[ Ссылка ]

FNIRSI UsbMeter Computer Software (Upgrade Tool)
[ Ссылка ]

Download link of the latest firmware V2.60 of FNRISI FNB48:
Link 1 : [ Ссылка ]
Link 2 :
[ Ссылка ]

Download link of the latest firmware V2.50 of FNRISI FNB48:
Link 1 : [ Ссылка ]

Link 2 : [ Ссылка ]

Download USB（Bluetooth APP）.v1.0 apk
[ Ссылка ]

FNB48 English manual-pdf
[ Ссылка ]

FNIRSI official website: [ Ссылка ]





Learn A TO Z FNIRSI-FNB48 ammeter Current Voltmeter
[ Ссылка ]

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