To download and install the official stock firmware for your Motorola Moto G6 (model XT1925-6) Go to product viewer dialog for this item.

"Download initiated," the screen flashed. The progress bar crawled forward. 10%... 25%...

Fastboot Mode: Power off the phone, then press and hold the Volume Down + Power buttons simultaneously to enter the bootloader/fastboot menu.

in Fastboot mode (Power Off + Volume Down). The tool will automatically detect your model ( Go to product viewer dialog for this item.

Extract the downloaded firmware ZIP into a folder (e.g., C:\moto_xt19256).