Do not use the "flash to SPI" method unless you are a very advanced user. This method involves directly writing a firmware dump to the SPI flash chip and is typically only used for unbricking devices or specific troubleshooting. An incorrect flash can permanently damage your device.
If you want to ensure your device is running smoothly, please let me know: What is your number? dso2512g firmware
Follow these steps carefully. Unplugging the device midway through a flash can permanently brick the hardware. Step 1: Identify Your Hardware Revision Do not use the "flash to SPI" method