Incorrectly flashing files or using incompatible tools can result in a "bricked" device, rendering it completely inoperable and often unrepairable through standard means.

Unlocking the kernel can disable important security features, making the device more susceptible to malware and unauthorized access.

The "Zdroid-SMT" tag is an internal ZTE build identifier for their kernel developers (often associated with the "SMT" or Surface Mount Technology production line). It is found on various Android versions: Kernel 2.6.29 or 2.6.32. Android 2.3: Kernel 2.6.35 or 2.6.38. Android 4.4: Kernel 3.4.0. Process to "Unlock" and Root (Legacy ZTE Devices)