NAND flash memory degrades over time. As the internal oxide layers break down, the eMMC controller draws more current to read/write. This increased amperage manifests as . If your POSTAL3 has been in service for 5+ years, the eMMC is likely in its end-of-life phase, consuming 2x to 3x its nominal power.
The "Hot" label often appears in discussions regarding eMMC chips or an overheating issue caused by improper voltage levels (specifically using 5V on 1.8V or 3.3V lines). Technical Documentation & Setup postal3 emmc hot
: It can access UserArea , Boot0 , Boot1 , and GP partitions. NAND flash memory degrades over time