Update T-Mobile HTC One with Jelly Bean 4.2.2 SlimBean Build 8 custom ROM

You are where you should be if all you wish for is an updated HTC One (T-Mobile variant) to Android 4.2.2 SlimBean Build 8 Final ROM. This sort of tool shall expose your smartphone to stuff which you haven’t seen so far.

For example: new apps to customize its looks, new features, faster speed, enhanced general performance and much more. The creators who are behind the SlimBean Build 8 custom ROM have taken care of security problems, too.


To enable an upgrade process which goes smoothly, you should first consider these pre-requisites:

How to flash SlimBean final ROM on HTC One

  1. On the laptop or comp you use, these files must be downloaded: the (file name: Slim-m7tmo-4.2.2.build.8-OFFICIAL ) and (file name: Slim_Gapps.4.2.2.build.8).
  2. Next thing you should do is to plug the handset to your notebook helping yourself with the USB cord of the HTC One. Move said files from the laptop over to the phone’s integrated SD card root, then unplug the devices after you witness the end of the transfer.
  3. Once the handset is switched off, you should continue by doing as follows: boot the handset into Bootloader Mode by holding down Volume Down while turning your device on, then press and hold Volume Up, Volume Down and Power.
  4. Now is the appropriate time to operate that NANDroid backup we featured on our list of requirements if you haven’t done the task back then.
  5. The backup is performed as shown here: choose “Backup&Restore“, opt for “Backup” and wait. After the procedure is completed, you can return to your phone’s Recovery Menu and opt for some tasks that are going to wipe the phone’s system. Choose “Factory Reset/Wipe Data” first and confirm it.
  6. When you are back in the Recovery Menu, you should choose “Wipe Cache Partition“; confirm this, as well. Then find “Advance” and opt for “Wipe Dalvik Cache“. You should now confirm this wiping task and then go to the next step.
  7. This one will tell you to choose a couple of options that are called “Install zip from SD card” and “Choose zip from SD card“.
  8. The next job to be performed for the guide needs the following from you: choose the SlimBean Build 8 Final ROM with “Power” and confirm. The flashing will commence any time soon.
  9. You will then need to go to the Google Apps package and repeat the actions in this paragraph to also flash it on the phone. Wait until the files have found their spot on your handset, then return to the Recovery Menu.
  10. Opt for this: “Reboot System Now“. The HTC One from T-Mobile will begin to boot into the upgrade firmware; the process should take no more than 15 minutes.
  11. If time is up, open “Settings” on your smartphone, then open “About Phone” and the firmware will appear before your eyes.

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NOTE: But, in case there is a “Status 7 error” somewhere on the touchscreen, you have to install a kernel for your phone; then end this by installing the SlimBean Build 8 custom ROM on the T-Mobile HTC One.

To people who suddenly have to deal with a boot loop or are stuck in HTC’s logo, we recommend this: opt for “Wipe Cache Partition” and then for “Wipe Dalvik Cache“. Do that several times and then restart the handset.

In order to have the old ROM on the smartphone once more: boot your device into the Recovery, choose “Backup & Restore“, then opt for your ROM from a list.