A: MP5 stands for "Multi-Protocol Patch Package 5th revision." Alps Semiconductor uses this extension to differentiate full firmware images (.mpa) from differential patches (.mp5). The alps-mp-o1.mp5 is actually a delta patch from version 2.4.0 to 3.2.1, which is why it is only 1.8 MB instead of 12 MB.
For developers and reverse engineers, the .mp5 format is worth understanding. Using the alps-unpack tool (available on GitHub under Alps-OpenTools): alps-mp-o1.mp5 update
alps-unpack alps-mp-o1.mp5 --output ./extracted
The extraction reveals:
Caution: Repacking a modified
.mp5will break the digital signature. The bootloader will reject it unless you flash a custom debug bootloader (requires physical JTAG unlock). A: MP5 stands for "Multi-Protocol Patch Package 5th
In rare cases, touchpad firmware can be vulnerable to "mouse jacking" attacks. While ALPS isn't as notorious as Logitech for such vulnerabilities, version .mp5 may include signed firmware updates to prevent unauthorized reflashing. Performance benchmarking
For most users, yes. The combination of critical security fixes, power efficiency gains, and new peripheral support outweighs the minimal risk of a failed update (less than 0.3% according to Alps telemetry). Industrial and medical deployments, in particular, should prioritize this update to comply with IEC 62443-4-2 security standards.
However, if your device is in a "set-and-forget" location with no network access and no sensitive data, and if the current firmware is stable, you could defer the update. But note that support for pre-.mp5 firmware ends on December 31, 2026, after which no further bug fixes will be backported.