Programs like Tera Term or PuTTY can be used to monitor the boot sequence.
A "dump file" is essentially a complete backup of the data stored on the receiver's flash memory. Unlike standard software updates that only modify specific parts of the system, a dump file contains the entire operating system, including the bootloader, kernel, and system settings. Usually distributed as a .bin or .dump file. mm3-su1506g-dsz-v1.0 dump file
hexdump -C mm3-su1506g-dsz-v1.0 | head -20 Programs like Tera Term or PuTTY can be
If the dump contains executable code for ARM or MIPS (common in embedded devices), you can load it into Ghidra or IDA Pro for reverse engineering. including the bootloader