Not long ago a fresh update with software version I537UCUCNH3 has been released for AT&T Samsung Galaxy S4 Active, well, not much to tell in this update, because it only brings minor changes. After updating your phone via OTA or other method, the Android version will still show the same version as when we get the earlier update (NE3) in June, which is version 4.4.2 (KitKat), so there’s no OS upgrade at this moment. Although it’s a small update, rooted users will be bothered, since root access will be dropped after the phone successfully upgraded to NH3 software.
Although the NH3 update for AT&T Galaxy S4 Active can’t blow you away, but we think it’s still useful, especially if you regularly utilize this phone for receiving calls or to send/receive text messages, since the connectivity related to both tasks will be improved after you apply the I537UCUCNH3 update. In addition, your smartphone could be more secure, since it also delivers a Google security patches as well as updated apps.
As we mentioned earlier, once AT&T Galaxy S4 Active updated to version I537UCUCNH3, the root will be lost and the previous method (towelroot) will not be able to help you to get back the superuser privileges. But there is good news for those who not yet apply the NH3 OTA update, as you can still have a chance to experience the latest software while keeping the root.
Thanks to an xda member – Code4U, who provided the NH3 OTA updates in safestrap-flashable format. This flashable zip file lets you preserve root and Safestrap recovery.
However, there are some treatments that you need to carry out before and after flashing the zip:
- restore your Samsung Galaxy S4 Active back to stock NE3 software.
- Wipe caches.
- Deleting su via Safestrap and leave the binary, etc.
- You can read the entire guide in Code4U’s post here.
In case your phone already did the OTA update, you might still have an opportunity to gain back the superuser access, according to a discussion on the same board, you have to reflash the inital KitKat (NE3) firmware, but minus the bootloader, re-root with towelroot, install Safestrap recovery then flash the OTA zip by Code4U above.