Post on 22-Mar-2018
V2.1
1 Overkillrc.com
GT3B Hack Kit Install Instructions
Written By
Austin Hutchison
Step 1:
Remove 4 screws located on top of the radio.
V2.1
2 Overkillrc.com
Step 2:
There are small plastic
latches that also hold the top in
place. The easiest way to pull the
top cover off is to push these latches
open, but it may knar up the plastic
alittle. If you don’t wish to knar up
the plastic you can take a chance
and muscle the top cover off,
however this may lead to worse
damage. To disengage the plastic
latches use a small flat head and
insert in the places shown on the
picture and gently pull up on the
cover…on the front side its located
near the diaganol on the screen pop
out, and the back side is located
directly across
Step 3:
With the antenna up pull the
top cover off. The rotary knob is
attached to the board as well. So it
would be smart to gently pry that off
the top cover with your fingernails or
small flat head screw driver. Other
side gently muscle off the cover, the
knob will come with it.
V2.1
3 Overkillrc.com
Step 4:
Ok now towards the button side
of the screen you’ll see 4 holes spaced at
.1”. This is where the 4 pin header goes,
Install the short pins into the holes with
the long pins pointed to the antenna side
of the case…then I suggest putting a dab
of hot glue on each end of the header,
make sure no glue gets on the front side,
it’s ok if it touches the backside pins,
although try to avoid this as well. It’s hard
to see the glue in the second picture, so
the arrows point to where to put the glue.
Step 5:
Ok now gently lift the board and pull towards the front. This is to pull the power button out of
its hole to lift the board up and out. Ok now gently twist the board up towards the st wheel. To expose
the bottom side of the header. Now with the bottom side of the hear exposed lets solder it. To solder a
header to a circuit board; pre tin your soldering iron tip lightly, position your iron on one side of the pin
so it touches both the pin and solder pad. Then let it heat both for .5-1 second. Now with your iron still
touching both apply solder to the other side of the pin, until it melts completely around and down
through the hole. Now clean your iron tip. Check to make sure this didn’t melt your hot glue and make
your header un level, if it did then reheat the joint and push the header back down. Now repeat the
steps above for the other 3 pins.
No glue past this line
V2.1
4 Overkillrc.com
V2.1
5 Overkillrc.com
Step 6:
Ok now flip your board back over and slide the power button back into its hole and push the
whole board back down level. Now you’ll see there’s no way you can plug into the header, that’s
because you have to cut a slot. Look at the header and at its furthest points take a pair of snips/cutters
and cut one step down into the plastic…chances are the front side of the cut will bend/flex out to the
thinnest point near where the screw goes through, this is ok. Now take a pair of pliers and bend the
plastic towards you, you may need to lightly wiggle it back and forth so it breaks off. This new slot will be
wre your plug enters the radio to program it. Now it probably doesn’t look real neat or very
professional. So what I like to do is take a razor knife or hobby knife, and cut all the un even white
stretched plastic off into a nice level surface.
After you have cut it plug in your cord and make sure it fits, I also like to take my razor and cut a mark in
so I know where the plug needs to be, so ones a put the cover back on I don’t have to worry about
getting it on the wrong pins.
V2.1
6 Overkillrc.com
V2.1
7 Overkillrc.com
Step 7:
Put the button covers back on lift antenna up, and pop the top cover back on, so the latches
snap back on. Now plug the cord back in, make sure it fits, if it does install the 4 screws and pat yourself
on the back because you just finished installing the hack kit to your radio. Now lets program it.
V2.1
8 Overkillrc.com
Step 8:
Now you need to download and install the programming software, ST visual programmer. It can
be download with/from this link http://www.overkillrc.com/GT3B/STVPInstall/sttoolset.exe If you are
running windows 7 and possibly vista you may need to install this patch as well, which can be found at
this link http://www.overkillrc.com/GT3B/STVPInstall/sttoolset_pack24_patch.exe Make sure restart
your computer after you install. Once you have rebooted your computer, open up ST Visual Programmer
and make sure you have these settings, first time you open it, it should let you choose, however if it
doesn’t, click on the configure tab, then configure ST visual programmer.
V2.1
9 Overkillrc.com
Step 9:
Close out of STVP; now plug
your radio into the programmer.. The
GREEN wire needs to be on the SB1
side on your programmer, and towards
the BND button on the gt3b side…it
was a black wire on the first batch of
kits.
Now plug the programmer into the
computer with the supplied USB cord.
Now open up STVP.
o Click File,
open,
Select the firmware you want to use.
o Now click program,
Current tab.
There should be a status bar on the bottom. It will program then verify. Don’t do anything till it says
verification complete.
V2.1
10 Overkillrc.com
Step 10:
Now unplug your radio, and start setting up your models, have fun.