How to S-OFF, Root and Install CWM/TWRP Recovery on HTC One Max Clad in an aluminum body, the HTC One Max looks like a natural addition to the One and One mini – three’s a family, and now HTC has most every market niche covered. It’s not a unibody design, though, so thankfully you can pry off the battery cover and add a microSD card for more storage to load all those movies you are going to carry. The battery compartment is sealed, but it’s a 3300 mAh unit, so no sweat, at least until we do the first battery tests. The phablet is not for the faint of heart, though, as with its 164.5 x 82.5 x 10.29 mm dimensions and 217g of weight, it is one “supersized” handset, as HTC itself is calling it in the description. You get your excellent BoomSound speakers at the front, but the back strays away from the One portfolio design paradigm, adding a flat and square fingerprint scanner, which can unlock your handset or start up to three favorite applications immediately upon touching it with three different fingerprints. Image Credits Key features Quad-band GSM/GPRS/EDGE support; 3G with HSPA; LTE 5.9″ 16M-color 1080p Super LCD3 capacitive touchscreen with 373ppi pixel density Android OS v4.3 Jelly Bean with Sense UI 5.5 Quad-core 1.7 GHz Krait 300 CPU, 2 GB RAM, Adreno 320 GPU; Qualcomm Snapdragon 600 chipset 4 MP autofocus “UltraPixel” camera with 1/3″ sensor size, 2µm pixel size; LED flash 2.1 MP front-facing camera, 1080p video recording Wi-Fi a/b/g/n, Wi-Fi Direct and DLNA; Wireless TV-out (Miracast) 16GB/32GB of built-in storage, expandable via a microSD slot Warnings: Below are some warning statements that you must be knowing before preparing to Root or Install Custom Rom in your HTC One Max Android Smartphone: Rooting/Installing Custom ROM is not an authorized process hence you’ll be losing all your warranty benefits over your HTC One Max after Rooting/Installing it. There are certain risks of damaging your Android Smartphone while Rooting/Installing Custom ROM in it. Hence, it is recommended that you proceed at your own risk and we are not to be held responsible even if your Smartphone gets damaged during or after completing the Rooting/Custom ROM installation process. You might not receive any future official software or firmware updates after rooting and installing Custom ROM in your HTC One Max. Before You Begin: Visit HTC Dev, open an account there, click on the Unlock Bootloader icon on the page and unlock the bootloader of your HTC One Max by following the instructions given there. The users of Verizon One Max can download the Rumrunner Tool from below and achieve S-Off and root access. Enable USB Debugging in your device. Click Here if you don’t know how to enable it. Download Android SDK and set it up in your PC. Click Here for full setup tutorial. Download & Extract ADB/Fastboot zip file in C drive of your PC. Download Rumrunner Tool for HTC Verizon model. Download unsecure kernel file for HTC One Max: Sprint_One_Max_1.16.651.4_Unsecure_kernel.Zip Download the following SuperUser file and copy it to your device: Superuser.Zip Now download your preferred custom recovery from below: CWM Recovery: HTC One Max (International): Recovery-Clockwork-Touch-22.214.171.124-T6ul.Img HTC One Max (Sprint): Recovery-Clockwork-Touch-126.96.36.199-T6spr.Img HTC One Max (Verizon): Recovery-Clockwork-Touch-188.8.131.52-T6vzw.Img TWRP Recovery: HTC One Max (International): Openrecovery-Twrp-184.108.40.206-T6ul.Img HTC One Max (Sprint): Openrecovery-Twrp-220.127.116.11-T6spr.Img HTC One Max (Verizon): Openrecovery-Twrp-18.104.22.168-T6vzw.Img How To Root and Install CWM/TWRP Custom Recovery In HTC One Max: Copy the SuperUser.zip file to your phone. Download the CWM/TWRP recovery image file from above and copy it to “Android SDK Fastboot-ADB” folder. The location of the recovery file should be the same as fastboot and ADB files in the folder. Connect your HTC One Max to computer via USB cable (do not use USB 3.0). Now open a command prompt. To launch command box, press Shift key+Right-click on mouse and from the list of options, select “Open command window here”. Then type in the and issue the following command: adb devices If you can see the serial number of your device in the command box, it’s is properly connected. Now issue the following line to reboot your device in Bootloader mode: adb reboot bootloader When you enter the Bootloader/HBOOT mode, highlight FASTBOOT by pressing volume down key and select it using the power button: Now open the “Android SDK Fastboot-ADB” folder. Make sure you have already copied the recovery .img file here. Launch a cmd window from within this folder (press Shift+Right-click on mouse) and type the command“fastboot flash recovery” followed by the name of the recovery image. For example, if you have downloaded the TWRP recovery image for the Verizon variant, type the following command line in the cmd window (you can replace the recover file name in Red with your own): fastboot flash recovery openrecovery-twrp-22.214.171.124-t6vzw.img Now hit the Enter key: Your favorite custom recovery will be installed to your HTC One Max within moments. Finally, go to REBOOT BOOTLOADER option and select it. Scroll to RECOVERY option and select it. You should now be taken to CWM or TWRP recovery interface. Now open “install zip from sdcard” (CWM) or “Install” (TWRP) option depending on your recovery. Navigate to the SuperUser.zip file and select it. Confirm the installation when prompted and let it be installed. When SuperUser is flashed, go to REBOOT option and select it. 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