specific to their MediaTek (MTK) chipset. This acts as a map of the phone's internal storage. The Modification : Using a text editor like

Before any modification, a full backup is mandatory.

If you own a smartphone powered by a MediaTek (MTK) processor—brands like Xiaomi (Redmi Note series), Tecno, Infinix, Oppo, Realme, or Vivo—you might have encountered a frustrating error after flashing a custom ROM or resetting the device: or "Bluetooth address: Unavailable." In more severe cases, the phone might lose its IMEI numbers, resulting in "Invalid IMEI" and no cellular service.