Xteink Patches Critical Bluetooth Stability Bug in X4 E-Reader

Xteink has released a system update for its $69 X4 e-reader that fixes significant Bluetooth connectivity issues causing device freezes. The improvements to scanning, connection speed, and wireless stability address embedded power-management trade-offs common in low-power ARM devices. The fix carries particular weight for a 650mAh device marketing 14-day battery life, where Bluetooth optimization must balance power consumption against reliable smartphone synchronization.