trying to enter recovery mode and upgrade rom

maybe somebody can help me- i have no idea what rom this is, or how to enter recovery mode- this unit has no butons (all touch buttons)
model:rkpx3
android version: 4.4.4
baseband version: unknown
kernel version: 3.0.36+
zbunix@ubu64 #1938
build number: JAX1604121508gwq-16en

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