The fear of "bricking" the GameSir T4 Pro is largely a remnant of 2020-era firmware tools. The modern CP210x flasher is robust. By staying on factory firmware, you are potentially leaving performance on the table—higher latency, lower battery efficiency, and potential compatibility issues with future games.
Congratulations. You are now on the latest firmware. GameSir offers the "GameSir World" app (formerly "GameSir Connect") on the Google Play Store and Apple App Store. While convenient, mobile updates are riskier due to Bluetooth interference. Gamesir T4 Pro Update Firmware
If you have recently purchased a T4 Pro, or have owned one for a while and noticed erratic button mapping, stick drift (yes, even Hall Effect sticks need calibration), or connectivity drops, you likely need to update the firmware. The fear of "bricking" the GameSir T4 Pro