Use a pair of metal tweezers to bridge the of the phone.
You must match your exact device model code (e.g., JSN-L21 for Honor 8X, MAR-LX1A for P30 Lite) along with the regional customization code (e.g., C432 for Europe, C636 for Asia). Flashing mismatched regional firmware can break cellular radio bands.
SigmaKey is another professional-grade service tool that excels at Huawei firmware servicing. It provides deep partition flashing for Kirin 710 devices. hisilicon kirin 710 flash tool
Before downloading any software, you must understand how Kirin 710 chips interact with computer systems during low-level maintenance.
Step-by-Step Guide: Flashing a Dead Kirin 710 via USB COM 1.0 Test Point Use a pair of metal tweezers to bridge the of the phone
However, the limitations of official tools have given rise to a robust ecosystem of third-party "Service Tools," such as the These tools are the true domain of the repair technician. While the official HiSuite can only reinstall the current version of the software or upgrade it, third-party tools offer granular control. They allow users to "downgrade" the Kirin 710’s firmware—a crucial step for fixing battery drain issues in newer updates or bypassing security patches to gain root access. Furthermore, these tools can perform "unbricking," a process where a Kirin 710 device is stuck in a boot loop (unable to start the OS) or stuck in the "EDL Mode" (Emergency Download Mode). By interfacing directly with the HiSilicon processor’s low-level protocols, these tools can resurrect a device that official software would deem irreparable.
Flashing a HiSilicon Kirin 710 device using specialized tools is highly effective for unbricking and software repair, but it carries inherent risks. Opening your phone voids warranties, and shorting the wrong components with tweezers can permanently fry the motherboard. Always cross-verify your hardware testpoint diagrams and ensure your firmware files precisely match your device model to prevent permanent hard bricks. Step-by-Step Guide: Flashing a Dead Kirin 710 via USB COM 1
While maintaining that connection, plug the USB cable into the phone and PC.
The storage chip (eMMC/UFS) may have suffered physical wear or hardware damage, a common issue on older mid-range chips.
Use a pair of metal tweezers to touch the designated motherboard test point pad and simultaneously hold it against the nearest metal ground shield (such as the SIM tray housing).