Chm-u01 Firmware Scatter [ Original ]

adb shell su cat /proc/dumchar_info This MTK-specific proc node outputs the exact scatter layout used by the kernel. Compare it to your XML — if mismatched, the device has been repartitioned.

For the curious repair technician: the scatter file is where software meets silicon. Treat it with respect. Need a specific CHM-U01 scatter XML example or help recovering from a bad flash? Leave a comment. Chm-u01 Firmware Scatter

Alternatively, dump the GPT:

For the CHM-U01, the scatter file typically contains 20–30 regions, from the Anti-Rollback (ARB) partition to the userdata area. A typical line from the CHM-U01 scatter looks like this: adb shell su cat /proc/dumchar_info This MTK-specific proc

Let’s dissect the CHM-U01’s scatter file not as a simple partition table, but as a low-level hardware blueprint. In the world of MediaTek (MTK) chipsets—which power the CHM-U01 (MT6735P)—a scatter file describes how the eMMC (embedded MultiMediaCard) flash memory is partitioned in physical address space . Unlike high-level block devices ( /dev/block/mmcblk0pX ), the scatter file works at the pre-bootloader level. SP Flash Tool, the standard flashing utility for MTK devices, uses this file to write raw data to exact physical offsets. Treat it with respect

If you’ve ever downloaded a stock firmware package for a Huawei CHM-U01 (better known as the Huawei Y6 Pro or Honor 5A in some markets), you’ve likely encountered a small but critical file with the .xml extension: the scatter file . To the uninitiated, it looks like a messy list of hexadecimal addresses. But to those who reverse-engineer, repair, or unbrick Android devices, the scatter file is the Rosetta Stone of the device’s storage architecture.

On the CHM-U01, the proinfo partition (containing factory SN) sits between seccfg and nvram . If you shift offsets even by 1 byte, the eMMC’s GPT and the scatter will mismatch, leading to S_FTHND_FILE_IS_NOT_LOADED_YET or STATUS_EXT_RAM_EXCEPTION errors. You don’t always need the original firmware package. On a rooted CHM-U01: