![]() ![]() Linux users, on the other hand, need to apply a specific patch to the kernel. If you’re running Windows, you have to install a libusb-based filter driver to override the default driverset. It’s important to note that the exploit payloads require a specially-tweaked USB driver for a successful interception. ![]() The method, which makes use of SoC-specific exploit payloads, intercepts the pre-flash queries made by SP Flash Tool and forcefully set the values of two crucial parameters (“Serial Link Authentication” and “Download Agent Authentication “) as false in order to continue the flashing process without any kind of authorization. Based on a boot ROM-exploit originally discovered by XDA Senior Member xyz`, developers Dinolek and k4y0z have come up with a generic bypass method, which is compatible with a wide variety of MediaTek-powered devices that would otherwise require authentication while flashing. Well, XDA’s fantastic developer community has once again come to the rescue. Because of this practice, firmware flashing via download mode can only be performed by a signed “Download Agent” program that has been authorized by the corresponding OEM, essentially meaning that you can’t flash or unbrick your own smartphone unless you have permission from the device maker to do so. Since the low-level download mode effectively has full control over the device’s storage, many OEMs including Xiaomi and Realme have started obfuscating the flashing process. ![]() A MediaTek-made proprietary program called “SP Flash Tool” can utilize this interface to force flash the system software on a device. It is strictly intended for OEM servicing and can be used to unbrick a device, just like Qualcomm’s Emergency Download Mode (EDL). Devices with MediaTek chipsets have a BROM (boot read-only memory), which typically loads the preloader executable and subsequently boots the Android system, but also houses an alternative boot mode known as Download mode. ![]()
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