Samsung Galaxy Tab 3 7.0 LTE (SM-T215) Firmware Overview
What is the latest SM-T215 firmware?
T215XXUBNJ2, released November 12, 2014 for region XSP with Android 4.4.2. The archive holds 2 official builds for this region.
Is the Samsung Galaxy Tab 3 7.0 LTE still getting updates?
Most likely not: there has been no new firmware since November 2014, so Android 4.4.2 is the last version this model got. The final builds below are still the best choice for a clean reinstall.
SM-T215 firmware for region XSP
How to Flash SM-T215 Firmware
Put the Samsung Galaxy Tab 3 7.0 LTE 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.