If the device hangs at the logo after an update, you may need to use a CH341 programmer or a Serial/TTL connection to manually flash the EEPROM.
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Before downloading, check your recorder's specifications. If your recorder is older and only lists H.264 support, do not attempt to install firmware that adds H.265 capabilities. It will not work, as H.265 typically requires a different hardware chipset (SoC). Conversely, if you have an H.265 recorder, updating its firmware is safe and often improves H.265 encoding efficiency and compatibility with newer cameras. If the device hangs at the logo after