Easy Blitzwolf BW-SHP6 flasher

I recently discovered the Blitzwolf SHP-6 with the Tasmota firmware as the perfect replacement for my 433 MHz home automation system.
Unfortunately flashing the SHP-6 is quite a tedious process as the entire unit needs to be taken apart and requires soldering.
So I created this pogo plug programming adapter that can be inserted directly into the plug with the top cover removed, and can be screwed into place so the screw and the spacer also remain securely in place.
The pogo plug is designed to interface with a ftdi ttl-232r-3v3 (or similar) cable, and has room for an integrated DC / DC converter to convert the 5V from the USB to 3v3 supply voltage for the ESP.
I used a specific type of DC/DC converter, as I had It laying around, any 5V -> 3.3V converter / LDO that is capable of handling 250mA should do.

In the meantime I already used this adapter to program 9 additional units, and this went like a breeze.
Hopefully you will be able to as well.

NOTE:
I am sharing this design to share with fellow makers this easy method of updating their Blitwolf SHP6 plug, whom are able to build their own.
I am not open to building and selling ready made plugs on request (as I have already got numerous requests).

Youtube video of adapter in action:
https://youtu.be/JNvG86WWKT4

Youtube video of wiring:
https://youtu.be/dqZVW31PhxU

I used the following parts:
5x Pogo pin (note link is for 100pcs)
Banggood link:
https://www.banggood.com/P100-E2-100Pcs-Dia-1_36mm-Length-33_3mm-180g-Spring-Test-Probe-Pogo-Pin-Tool-p-1169311.html?rmmds=myorder&cur_warehouse=CN

1x Adjustable DC/DC converter (NOTE: this converter needs adjustment before it can be used)
Banggood link:
https://www.banggood.com/DC-DC-Adjustable-Power-Supply-Buck-Converter-Step-Down-Module-p-922049.html?rmmds=myorder&cur_warehouse=CN

1x Switch
Banggood link:
https://www.banggood.com/10Pcs-Black-Mini-Size-SPDT-Slide-Switches-On-Off-100V-2A-DIY-Material-p-1011746.html?cur_warehouse=CN

2x M3x6mm screw
1x 8 pin 2.54 mm / 0.1" pin header connector
1x ftdi ttl-232r-3v3 (or similar) cable