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No. The test point method forces the chip into BROM mode by manipulating the boot pins. If the chip itself refuses to enter BROM mode because the eFuse is blown, no test point will bypass it. Technicians have confirmed that BROM will not appear even with test points on fused devices.
Action: Ensure you are using the latest version of mtkclient . 3. Use Official Service Center Tools
: This status prevents third-party tools (like older versions of SP Flash Tool) from flashing or reading the device memory via the USB VCOM port because the chip requires a signed "handshake" to proceed. Context in Documentation
Check if your device supports flashing instead.
In the context of the Rockchip secure boot flow (referring to the Rockchip Secure Boot Application Note ): brom disabled by efuse 0x146
: Flashing the wrong preloader.bin while the BROM is disabled can make the device completely unresponsive, as you lose your only remaining entry point.
From a hardware security perspective, the eFuse check is performed . The BROM code is immutable (by definition, it is read‑only). The following steps happen in hardware, within microseconds of power‑on:
Legal and ethical notes
In the world of embedded systems, smartphones, and MediaTek (MTK) powered devices, users and technicians often encounter cryptic error messages when trying to flash firmware, unlock bootloaders, or bypass security mechanisms. One of the most frustrating and increasingly common errors is the dreaded Technicians have confirmed that BROM will not appear
In your flashing tool, look for a setting or checkbox labeled "EMI Custom" , "Force Preloader" , or "Preloader Mode" . Do not select "Crash Preloader to BROM" or "Force BROM".
Interpret 0x146:
: Many service actions can still be performed in META mode.
Once the eFuse is blown, the BROM is gone forever. No software update, no test point, no boot‑loader trick, no firmware reflash can bring it back. The chip is physically programmed to deny BROM access for the rest of its life. Use Official Service Center Tools : This status
Note: Options below depend heavily on the SoC vendor, device design, and whether you have authorized access.
: When a manufacturer rolls out an aggressive security patch, the device's bootloader or a factory flashing tool command sends a high voltage to "blow" or burn specific eFuses.
From a servicing point of view, the BROM is extremely valuable because it can be triggered even when the main flash is empty, corrupted, or boot‑looping. By shorting specific on the mainboard, you can force the device into BROM mode. In this mode, specialised tools—SP Flash Tool, various commercial “boxes” (Z3X, Pandora, etc.), or open‑source tools like mtkclient—can communicate directly with the chip, bypass many security checks, and perform low‑level operations such as:
How to confirm the cause (diagnosis steps)
"It is a driver issue on my PC." Fact: While driver problems can cause other BROM errors (e.g., 0x13 or STATUS_BROM_CMD_SEND_FAIL ), error 0x146 is a security response from the chipset itself.