Samsung Galaxy Note 10.1 2014 (Wi-Fi + 3G) (SM-P601) Firmware Overview
What is the latest SM-P601 firmware?
P601XXUDQA1, released March 16, 2017 for region MGF with Android 5.1.1. The archive holds 2 official builds for this region.
Is the Samsung Galaxy Note 10.1 2014 (Wi-Fi + 3G) still getting updates?
Most likely not: there has been no new firmware since March 2017, so Android 5.1.1 is the last version this model got. The final builds below are still the best choice for a clean reinstall.
SM-P601 firmware for region MGF
How to Flash SM-P601 Firmware
Put the Samsung Galaxy Note 10.1 2014 (Wi-Fi + 3G) into Download Mode, load the BL, AP, CP and CSC files into Odin on a Windows PC and press Start. Use HOME_CSC to keep your data, CSC for a full wipe.