As with other TWRP's for newer Samsung devices, you need to uncheck auto-reboot and F.Reset time in Odin so you can manually shut down the device and boot into recovery the first time after flashing the custom recovery. If you don't boot into the custom recovery immediately after flashing it to the device, then the OS will overwrite it with the factory recovery and you'll need to start over.
While we all love to flash new things, You and You alone can choose or choose not to flash this custom recovery.
I am not liable for any of the following : Bricks, Soft Bricks, Meltdowns, loss of data, or damage to your device.
THIS RECOVERY WILL TRIP YOUR KNOX COUNTER - YOUR WARRANTY WILL BE VOID.
THIS RECOVERY IS ONLY FOR SM-T235 and SM-T235Y Tab 4 7" LTE Devices
2). Unzip Odin3v1.85.zip placing the extracted folder somewhere on your PC you can find and execute Odin3 from later.
3). Store UPDATE-SuperSU-v2.46.zip somewhere on your SM-T235's external SD storage where you can find it from TWRP later.
4). Unzip recovery.tar.md5.zip placing the extracted file recovery.tar.md5 somewhere on your PC you can find it from Odin3 later.
5). Put SM-T235 tablet in Download Mode (Power Button+Volume Down+Home Button)
6). Flash recovery.tar.md5 using Odin3 v1.85 - use PDA/AP button in Odin - UNCHECK Auto-Reboot and F.Reset Time
7). When flashing is completed you will see RESET displayed in Odin3.
8). Unplug your SM-T235/SM-T235Y from the PC and press (Power Button+Volume Down+Home Button) to initiate a restart/reboot - Don't release your fingers from the buttons.
9). IMPORTANT: AS SOON AS THE DEVICE POWERS DOWN (screen goes blank) MOVE YOUR FINGER FROM THE VOLUME DOWN BUTTON TO THE VOLUME UP BUTTON WHILE STILL PRESSING THE POWER BUTTON+HOME BUTTON.
10). IMPORTANT: AS SOON AS THE SAMSUNG SM-T235 LOGO APPEARS (White Letters) RELEASE YOUR FINGER FROM THE POWER BUTTON WHILE CONTINUING TO PRESS VOLUME UP+HOME BUTTON (If the animated Samsung Logo appears, then you missed Recovery mode and will need to start the entire process over from the beginning.
11). IMPORTANT: If you timed your finger pressing and releasing properly, you should now SEE the blue TEAMWIN splash screen which means you are entering TWRP recovery.
12). Once in TWRP Recovery, you will see a button that says Install. Tap on it.
13). Find UPDATE-SuperSU-v2.46.zip where you previously stored it on your external SD card and install/flash it to your SM-T235/235Y using TWRP.
14). Once installation of UPDATE-SuperSU-v2.46.zip is completed, you can proceed to reboot your SM-T235/T235Y from the TWRP main menu.
15). After the device finishes booting up, your Galaxy Tab 4 7.0" SM-T235/T235Y will be rooted.
16.) Download and run RootChecker to verify root.
hennymcc - [T235][ROM][5.1.1][LMY48G] CyanogenMod 12.1 for T235(Y) [Alpha 12/07/2015]
RVR - TWRP 2.8.1 for the Galaxy S5 Mini (G800F)
Chainfire - UPDATE-SuperSU-v2.46
A.S._id - Odin3 ROM Editor
A.S._Dev - android_img_repack_tools