This update is part of the package released by the author Sergey Meus. It works fine with Chess for Android. So, i will update K2 in Rapidroid as soon as possible.
By the way, i wish an arm7 build rather than arm5. According to several previous tests, the speed boost from arm5 32-bit to arm7 32-bit is much more significant than arm7 32-bit to arm8 64-bit, though one would normally expect the opposite.
Weird but true:
Arm7 is generally faster by 40-70% than arm5.
Arm8 is generally faster by 30% than arm7.
GET K2 0.87 32-bit for arm5 pie