SafeRooting
Tecno Spark 40C root support — Magisk root and bootloader unlock
TECNO

Tecno Spark 40C

Released: 2025, July 19Available. Released 2025, August

ROOT AVAILABLE

This device is fully compatible with our remote root service. Includes Bootloader Unlock, Magisk, and custom setup.

4.6 Rating

General

Brand
Tecno
Model
Tecno Spark 40C
Released
2025, July 19
Status
Available. Released 2025, August
Price
About 90 EUR
OS
Android 15, HIOS 15.1
Dimensions
165.6 x 77 x 8.4 mm (6.52 x 3.03 x 0.33 in)
Weight
-
Build
Glass front, plastic back, plastic frame
SIM
Nano-SIM + Nano-SIM

Display

Type
IPS LCD, 120Hz
Size
6.67 inches, 107.4 cm, 2, (~84.2% screen-to-body ratio)
Resolution
720 x 1600 pixels, 20:9 ratio (~263 ppi density)

Performance

Chipset
Mediatek Helio G81 (12 nm)
CPU
Octa-core (2x2.0 GHz Cortex-A75 & 6x1.8 GHz Cortex-A55)
GPU
Mali-G52 MC2
Internal
128GB 4GB RAM, 128GB 8GB RAM, 256GB 8GB RAM
Card slot
Unspecified

Camera

Single
8 MP
Features
Dual-LED flash, HDR
Video
Yes

Battery

Charging
18W wired

Network

Technology
GSM / HSPA / LTE
2G bands
GSM 850 / 900 / 1800 / 1900
3G bands
HSDPA 900 / 2100
4G bands
LTE
Speed
HSPA, LTE

Connectivity

WLAN
Yes
Bluetooth
Yes
Positioning
GPS
NFC
No
Radio
FM radio
USB
USB Type-C, OTG
3.5mm jack
Yes

Sensors

Sensors
Fingerprint (side-mounted); unspecified sensors

Other

Colors
Veil White, Ripple Blue, Titanium Grey, Ink Black
Models
KM4k
Announced
2025, July 19
Loudspeaker
Yes, with dual speakers
Infrared port
Yes

Tecno Spark 40C Overview

The Tecno Spark 40C is an Android device from TECNO, released in 2025. It combines the Mediatek Helio G81 (12 nm) and a 6.67-inch display, running Android 15. This page tracks its full specifications, root status, and the bootloader and recovery notes that apply to it.

Root the Tecno Spark 40C

The Tecno Spark 40C is a 2025 Android device from TECNO. It runs the Mediatek Helio G81 (12 nm), a MediaTek platform, flashed via SP Flash Tool on many models with BROM as the deep-recovery path. Shipped software: Android 15, HIOS 15.1. For this model the realistic path is: a standard fastboot bootloader unlock, followed by Magisk via patched init_boot image (fastboot). Typical hands-on time is 1–3 hours.

Difficulty

Moderate — brand-specific steps involved

Typical time

1–3 hours

Method

Magisk via patched init_boot image (fastboot) — KernelSU also viable (GKI kernel)

Bootloader unlock on TECNO

Unlock procedure follows the generic Android flow: enable OEM Unlocking in Developer Options, then unlock via fastboot. Exact availability depends on the model and region — confirm before flashing.

Platform notes

MediaTek platforms flash through SP Flash Tool rather than plain fastboot on many models, and expose BROM mode as a deep-recovery path. Correct scatter/firmware matching matters more here than on Snapdragon devices.

Before you start

  • Bootloader unlocking factory-resets the device on almost all models — back up everything first.
  • As a device launched on Android 15, the Magisk target is typically init_boot.img, not boot.img — patching the wrong image is the top bootloop cause on newer models.

FAQ

Can I root the Tecno Spark 40C?

Yes. After enabling OEM Unlocking and unlocking the bootloader, root is Magisk via patched init_boot image (fastboot). The unlock notes on this page describe the exact TECNO procedure.

Does the Tecno Spark 40C support custom recovery (TWRP)?

That depends on community support for this exact model — verify a build exists for its codename before flashing anything. TWRP is not required for root: Magisk installs by flashing a patched init_boot image via fastboot.

Will root the Tecno Spark 40C void my warranty?

TECNO will generally treat a rooted Tecno Spark 40C as outside warranty while it is modified. Restoring full stock firmware before a service visit usually restores normal treatment in practice, and consumer law in some regions (such as the EU) may still cover defects unrelated to root.

What Android version does the Tecno Spark 40C run?

It runs Android 15, HIOS 15.1. The specifications table on this page lists the full software details.