Sprint has released another Android 4.3 OTA update on Samsung Galaxy S4 (SPH-L720) that comes in build numbers L720VPUEMK2. The MK2 is an enhancements and fixes software update which technically resolves the sleep mode problem concerning the earlier 4.3 released build L720VPUEMJA, according to Sprint’s given changelog When we get into the deeper look of the MK2, we found out some patch files for Android framework and system apps.
This update is around 26MB in size to download via OTA (over-the-air). So better head-over to your phone’s Settings>>About Device>>Check for Software Update.
Here’s the stock OTA update 4.3 from MJA to MK2 download link for those who knows how to manually install it via stock recovery.
Device name: Samsung Galaxy S4
Model number: SPH-L720
Build number: JSS15J.L720VPUEMK2
http://android.clients.google.com/ota/sprint_samsung_l720/USER_L720_SPT_MJA to_MK2 Update_FWD.zip
This update includes a new 4.3 modem and a secured bootloader image, KNOX apps is still present.