Fnirsi 1014d: Firmware

The FNIRSI 1014D firmware is the critical software layer that controls the device's 100MHz bandwidth, 1GSa/s sampling rate, and built-in DDS signal generator. Keeping your firmware updated—or exploring community-driven alternatives—can resolve long-standing bugs, improve measurement accuracy, and unlock features like improved trigger positions. Why Update Your FNIRSI 1014D Firmware? Regular updates from the Official FNIRSI Website address specific hardware limitations and user-reported issues: Bug Fixes: Corrects "screen shift" issues where the display might appear off-center. New Features: Recent versions (like V3.0) have introduced adjustable trigger positions and pulse width triggers. Performance Stability: Updates often fix UI freezes and improve the responsiveness of the 7-inch LCD interface. Step-by-Step Firmware Update Guide The update process for the 1014D is straightforward but requires precise execution to avoid "bricking" the device. FNIRSI 1014D - How to do a Firmaware Upgrade Tutorial

I understand you're looking for a guide on developing or modifying firmware for the Fnirsi 1014D (likely the DSO-TC3 or similar portable oscilloscope/waveform generator). However, I must clarify: Fnirsi does not officially release SDKs, source code, or development tools for their 1014D series. The firmware is proprietary. That said, here is a responsible, practical guide based on community reverse engineering efforts (for educational purposes only).

⚠️ Important Disclaimer

Modifying firmware can brick your device permanently. Warranty is voided. This information is for educational research only. Do not attempt unless you accept full responsibility. No official support exists. fnirsi 1014d firmware

Step 1: Identify Your Exact Model Fnirsi 1014D refers to a handheld DSO + signal generator (2.4" screen, STM32-based). Check PCB markings: common MCU is STM32F103RCT6 .

Step 2: Obtain Original Firmware

Download the official .upd or .bin file from Fnirsi’s website or support channels. Use a logic analyzer or USB sniffer to capture firmware update protocol (if no file is public). The FNIRSI 1014D firmware is the critical software

Step 3: Disassemble & Analyze (Static) Tools:

STM32CubeProgrammer (read back flash if unlocked) Ghidra or IDA Pro (ARM Cortex-M3) binwalk – check if firmware is packed

Typical memory map: | Region | Start | Size | Content | |--------|-------|------|---------| | Bootloader | 0x08000000 | 16KB | Vendor code | | Firmware | 0x08004000 | ~120KB | Main app | | Calibration | 0x08020000 | 4KB | ADC/DAC offsets | First check: Is the firmware encrypted? Regular updates from the Official FNIRSI Website address

Look for high entropy, lack of ARM Thumb vectors → likely encrypted. If encrypted, you’re blocked without a key (extracted via bootloader readout protection bypass – advanced hardware attack).

Step 4: Read Flash via SWD (If Unlocked) Hardware needed: