On my M532 was running android 4.1.1.
When I try to update it, with the package CHAGALLF15105.pkg downloaded from Fujitsu, I get the following messages:
-- Install /sdcard ...
Finding update package...
Installation aborted.
Installation aborted.
I tried with others package versions with same results.
Also after select "wipe data/Factory reset", next boot return to Android system recovery screen.
Does anyone have a solution for this issue?