M.2 UPS PMH firmware V88 (0x0088)
M2_PMH.hex is the combined application and protected-loader image.
For routine UART updates, the supplied Python updater filters protected
regions and programs only application Flash. Use -b 38400 and follow
installation/BOOTLOADER_AND_UPDATE.txt and manual V91.
Firmware source code and build tools are not included in this customer package.
