Assuming you have installed the new KitKat build, here is how to root XXUANC4 Android 4.4.2 on the...
Samsung Galaxy NotePRO 12.2 SM-P901 (3G)
Install XXUANC4 Android 4.4.2 on Galaxy NotePRO 12.2 P901 Stock Firmware
Samsung Galaxy NotePRO 12.2 P901 (3G) can now be updated to XXUANC4 Android 4.4.2 firmware update...
Root Galaxy NotePRO 12.2 P901 on KitKat 4.4.2 Official Firmware
A complete guide on how to root Galaxy NotePRO 12.2 P901 (v1a3g) — 3G variant of the this...