Many users flash the X720 ROM onto the X722 because they look identical. Do not do this. The X722 uses a different display driver and touch firmware. Flashing an X720 ROM results in a hard brick (Qualcomm 900E error) requiring a deep flash cable.
There are two main ways to restore the stock firmware on the X722, depending on the state of your device. official letv leeco le pro 3 elite x722 stock rom link
This is the safest method and preserves the anti-fraud protection. Many users flash the X720 ROM onto the
The LeEco Le Pro 3 Elite (X722) was the slightly downgraded but more affordable sibling of the flagship X721. While the hardware remains solid, software support for these devices has become scarce following LeEco’s operational scaling back. Flashing the stock ROM is often necessary to unbrick a device, remove buggy updates, revert from custom ROMs, or simply restore the device to its original factory state. Wipe Data: Select "Wipe data/factory reset" and confirm