If the phone boots, enable ADB/USB debugging and type adb reboot edl .
If you cannot enter EDL mode, search for your specific model (e.g., "Vivo Y21 EDL testpoint") to find the exact points to short. all-qualcomm-frp-remove-tool-9008-mode-free-download
If Windows shows an error, try disabling Driver Signature Enforcement or using UsbDk . To give you the best steps, I need to know: What is the brand and exact model of the phone? Do you have a computer (Windows) available? If the phone boots, enable ADB/USB debugging and
A special USB cable to force EDL mode. 🚀 Step-by-Step Guide (General Qualcomm Devices) If the phone boots
Are you comfortable opening the to use testpoints if necessary?