I can provide a step-by-step guide once I have those details!
The term "Snapdragon extra quality" does not correspond to a known standard or specific requirement in unlocking bootloaders. Qualcomm Snapdragon processors are common in many Android devices, including Xiaomi's. The process mentioned should work for most Xiaomi devices with Snapdragon processors. I can provide a step-by-step guide once I have those details