No. The Realme C2’s stock recovery only supports external storage via microSD card . OTG (USB On-The-Go) is not supported in recovery mode.
Download the full OTA zip (OZIP) from Realme’s update server. Some custom recovery sites also provide flashable zips. Firmware Realme C2 Via Sd Card-
: Power off the device, then hold the Power and Volume Down buttons simultaneously until the Realme logo appears. Firmware Realme C2 Via Sd Card-
: The phone should have at least 60% charge to ensure it doesn't power off mid-process. Firmware Realme C2 Via Sd Card-
Once the update is successful, a confirmation message will appear. Tap .