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PreCentral: How to install homebrew apps on your TouchPad or webOS smartphone


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Ready to jump into the wide world of homebrew on your TouchPad, Pre, or Veer? Alright! Here's what you need:

  • Your webOS tablet or smartphone
  • A computer, Mac or PC, connected to the internet
  • A Micro-USB cable to connect the webOS device to your computer (you can use the cable that came with the device, but any Micro-USB cable will do)
  • A stiff drink (this isn't required, but you'll deserve one for being awesome enough to be doing homebrew)

Got that? Okay, time for some clarifications. webOS devices do not need to be "rooted" - they come from the factory open enough that special tools aren't needed to install apps outside of the App Catalog or gain access to the operating system. The process of getting a homebrew installer set-up is relatively straight-forward and doesn't involve anything scary or potentially warranty voiding (there are potentially warranty-voiding things you can do after that, but everything described in this how-to is perfectly acceptable).

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    • By pivotCE
      Well, it’s 2024 and technology continues to advance. The TouchPad isn’t new by any means, but that doesn’t mean it can’t be slightly modernized to be more convenient today. Specifically, it is entirely possible to convert the TouchPad’s Micro USB port to USB C for charging and USB storage access. I’ll show you how.
      This is a tough mod which requires micro-soldering and modifying a PCB which you will have a hard time sourcing a replacement for without buying another TouchPad. Proceed at your own peril.
      Tools for the Job
      To do this mod you’ll need a few things for tools and parts. Here’s a list of what I used:
      – Needle nose pliers/tweezers
      – USB C boards with 5.1k resistors
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      – Soldering iron, solder, flux and a hot air station
      – Flush cuts
      – Dremel with cutting or sanding wheel
      – 28 AWG wire or smaller. 30 AWG is pretty good but any wire around 0.25mm to 0.5mm should work.
      – Small file and screwdriver set
      – Painter’s and kapton tape
      – Metal spudger Disassemble the TouchPad
      This is where you’re going to want to get that metal spudger out and be very careful not to snap clips. I can’t explain it better than iFixit already did so go check out their and then come back here.
      Modify the USB Connector Board by Removing the Micro Port
      There are a few ways to remove the Micro USB port. I added a bunch of flux and coated all the connectors in fresh leaded solder and then used a hot air station set to 800 degrees while wiggling the port very slightly with needle nose pliers. You don’t have to be particularly careful here so if you want to cut the port off with the dremel or the flush cuts or just rip it off with the pliers, (I don’t recommend it but…) that’s fine. We’re not using the pads it’s soldered to anyway. You should STILL be careful not to crack the board. Go slow. Be patient.
      Trim the USB C Board
      We need to expose the USB C port a bit on this board so let’s cut it down. Grab the painter’s tape and flip the USB C board upside down. You’ll see a small trace between the front and rear anchor points on the right side, which we don’t want to cut. Mark the tape just on the other side of that trace like I did. Dremel along the tape line until you get to the port. You can then use needle nose pliers, a flat file, and/or flush cuts to remove the rest of the board from the bottom of the port.
      Prepare the USB Connector Board for the USB C Port
      We need to slide the port into the old space so grab the painter’s tape again and mark off the area I marked to make room for the USB C port. You can place the port up to it like I did and use that as a guide. Grab your dremel again or a similar tool and cut out what you marked off. When you’re done, the USB C port should slide easily into the groove. It will fit tighter when we add the kapton tape in a later step.
      Make Room in the TouchPad for the Added Thickness of the USB C Board
      The USB C board will sit underneath the USB connector board so we have to make room by trimming away the plastic underneath. For this you’ll need to use flush cuts or any other tool you have to chip away. You could use the dremel for this if you’d like. Be careful to not go beyond the first inner layer. Beyond that is the outer shell of the TouchPad. There’s no real method here, just cut out the screw posts and chip away. Use the pictures below as a guide.
      Cut the USB C Hole from the Old Micro USB Hole
      To open the micro USB hole enough to fit the USB C port, take a rounded file to the left and right of both sides and just file a little bit at at time. Use a small flat file to widen the top and bottom of the port. This process is just trial and error. File a little and then grab the USB C board to test. The port will need to fit inside the hole a bit so you can push it through from the outside to test the hole size if that’s easier. Note: the USB C board will likely not rest on the bottom of the TouchPad and will float a little. This is good because it makes room for your wires and a little kapton tape underneath.
      Tape the USB C Board
      Since we hacked away at the USB connector board it’s possible we’ve provided the perfect environment for creating shorts! Oh no! So get out the kapton tape because we’re going to add a layer on both sides. You’ll see how I did it on one side below. Do it on both sides. You’ll also notice how I did not cover those two small square contacts just at the bottom of the tape. That’s because we need them.
      Where To Get Power and Data
      You’ll see the diagrams below which I’ve marked with VBUS (power), data in, data out, and ground. Obviously the old port is gone and most if its pads, but I wanted to show that both sides of the board have the connections. You could possibly do this mod differently, and if you so choose, hopefully these help.
      A quick note: this mod can be done with a 4-pin USB C port. That would give you power and data just like with the USB C board I’m using in this guide, however, a 4-pin USB C board will not charge with a USB C charger (ie USB 3.1). The board I’m using in this guide provides the ability to use any charger because it comes pre-built with 5.1k resistors wired to CC1 and CC2 to ground. This is the trick that tells the USB C chargers to send power to the device.
      Solder the USB C Board into the USB Connector Board
      This isn’t a “how to solder tutorial” so hit up youtube and find a good tutorial that works for you. In general though, use flux, pre-tin the VBUS, Ground, D-, and D+ pads on the USB C board as well as the points on the bottom of the USB connector board.
      Now for the tricky part, I didn’t list it in the Tools section above, but it would really help to have magnification or a digital microscope for this. I have these things and I used both. You might have steadier hands and better eyes than me. The picture below was my first attempt of the three TouchPads I modded, and it’s not my best soldering work, but fundamentally, this is what yours should look like.
      Put the Pieces Together
      You can use a bit of kapton tape to secure the wires in place a bit more if you’d like but it’s not required. It won’t short since it’s only plastic underneath. This is all press fit into place, but if you’re uncomfortable with that, you can add a little hot glue under the board as you put it back into the TouchPad. You don’t have to put the metal shield back into place if you don’t want to. It’s all a pretty tightly fit and if you find the TouchPad screen isn’t as flush as you want, just leave the metal shield off. A little kapton tape right on top would be fine instead.
      Congrats, You Now Have USB C
      I did this mod on three TouchPads and each one works fine with any USB charger I could find, including USB C port having USB 3.1 chargers. I can also confirm the data connection works just like it should to connect via USB mode on PC. Sadly, this doesn’t do anything to stop webOS from telling you the charger you’re using isn’t the original TouchPad barrel charger, but you can make a custom cable to stop that which I’ll cover in a future article on pivotCE.

      #webOS4ever

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