SKU: 73767314442

RadioMaster ExpressLRS USB UART Flasher V2

Sale price$13.49 Regular price$14.99
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Ships within 48 hours · Estimated delivery Aug 6 - Aug 11

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Description

RadioMaster ExpressLRS USB UART Flasher V2Upgrade your ELRS firmware with ease using our simple and effective tool. The new V2 version features a USB C interface, enabling you to connect the tool to your PC via cable. The new power button allows effortless power cycling with a single press, eliminating the need to struggle with cables while holding down buttons. Our streamlined design makes preparing your receiver for a firmware update faster, easier, and more efficient than ever! When it

Upgrade your ELRS firmware with ease using our simple and effective tool. The new V2 version features a USB-C interface, enabling you to connect the tool to your PC via cable. The new power button allows effortless power cycling with a single press, eliminating the need to struggle with cables while holding down buttons. Our streamlined design makes preparing your receiver for a firmware update faster, easier, and more efficient than ever!

When it comes to updating your ELRS receivers, you're faced with two options: Wi-Fi or Serial Port. While Wi-Fi upgrading may seem convenient, it can be unreliable due to network instability. This can result in a bad flash, requiring recovery with a UART tool. That's where the V2 ExpressLRS USB UART Flasher comes in, offering a reliable and easy solution for your firmware upgrade needs.

With the RadioMaster V2 ExpressLRS USB UART Flasher, your wireless connection won't be a concern. This dongle is specifically designed for ELRS receiver serial port upgrades, providing a reliable and easy solution for flashing or recovering receivers with a bad flash. 

Our USB flashing tool is a versatile solution, not limited to ELRS serial port upgrades. It comes with a range of connection options, allowing easy connection to our entire range of receivers. By switching between 3.3v and 5v, it can also be used for other devices requiring a UART interface. This versatility makes it a valuable addition to your toolkit, catering to all your firmware upgrade needs.

Check out all our ExpressLRS ProductsReceivers, and the rest of our RadioMaster Products! 

Features

  • Upgraded USB-C interface
  • Power button for easy ON/OFF power cycling
  • Reverse polarity protection
  • Over-voltage protection 
  • Switchable power supply between 3.3V and 5V
  • Standard 2.54mm pins
  • RM-CRSF JST-GH port for simple plug-n-play connection with RadioMaster ER series receivers
  • Pin sockets included
  • Dupont cables for convenient testing

Compatible Receivers

Using 2.54mm pin output and spring-loaded pin adapter or Test hook adapters:

Using regular 2.54mm pin output (Servo plugs):

Please note: The second channel is repurposed as a TX for the serial port tool's RX port, while the third channel is repurposed as an RX connected to the serial port tool's TX port.

Firmware upgraded by RM-CRSF interface output:

Please note: The above receivers can be connected to the receiver's CRSF port using a 4-wire CRSF cable.

Firmware upgrade instructions

  1. Connect the Serial Port Cable with the receiver
  2. Connect to the computer with a USB extension cable, press the receiver's BOOT button, then press the POWER button on the serial tool
  3. Follow the ELRS upgrade tool's instructions to complete the upgrade

Download

Size

Package Includes

  • 1 * RadioMaster ExpressLRS USB UART Flasher V2
  • 1 * Pogo Probe
  • 1 * CRSF Wire 
  • 1 * 2.54mm Serial Port Cable - Type B
  • 1 * Serial Port Test Hook - White
  • 1 * Serial Port Test Hook - Green
  • 1 * Serial Port Test Hook - Red
  • 1 * Serial Port Test Hook - Black
  • 1 * User Card

    Shipping Notes
    • Free Standard Shipping on $100+ Orders to the USA.
    • Except Preorder products are shipped in 48 hours.
    • Delivery to the USA:
    1. Standard Shipping : 3-10 business days
    • If time is of the essence, please consider selecting expedited delivery for faster service.
    Exchange/Return Notes
    • We offer a 30-day return/exchange service after receiving.
    • Final sale items are not eligible for returns or exchanges.
    • To process your return/exchange, please contact us at [email protected]
    • Please click here for more details>>> Return & Exchange Policy
    SKU: 73767314442

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    4.2 ★★★★★
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    A
    New York, US
    ★★★★★ 4
    Good pillows
    Color: Cooling Blue Cover, Size: Queen (Pack of 2)
    Takes some getting used to but and the cooling doesn’t last very long in my opinion, but overall amazing comfy pillows. The materials are good and are washable. I mostly stopped waking up with a stiff neck and back.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on April 20, 2026
    J
    Verified Purchase
    Jonathan
    Louisville, US
    ★★★★★ 5
    Believe the Reviews
    Color: Cooling Blue Cover, Size: King (Pack of 2)
    I purchased these pillows because we were in need of new pillows, I previously had allswell pillows which were from walmart and they were good to start but now they tragically became very sparse and it started to effect my sleep so I saw these after careful review on other pillows and reviews I came across these and I saw some reviews and videos and I ordered them.. first they are king size we ordered they are perfect for the bed, they are plump and soft, they are memory foam which has always worked out for me for support and kept it’s shape these are great it did have a little smell I guess from packaging but other than that they are a huge upgrade from what we had before! I’m excited because they are cooling too! for the price point can’t beat it and this is coming from someone who was about to spend money on a purple pillow this will be good for now definitely buy it.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on March 28, 2026
    P
    Verified Purchase
    PilarC
    Dallas, US
    ★★★★★ 3
    Inconsistent
    Color: Cooling Blue Cover, Size: Queen (Pack of 2)
    Ive ordered two different batches of these pillows, the first was a 2 pack, the second batch was a 4 pack. The pillows that came in the 2 pack have a different quality to them. The memory foam feels thicker, takes long to depress and to spring back to form. It offers more resistance, a heavier odor (at the start), and was the pillow that I fell in love with. Things changed when I ordered the 4 pack a couple months later. There was an inconsistency between the foam in these two different batches. both sets of pillows are comfortable. The first batch being firmer means I had to remove more foam before it became comfortable but the 2nd batch being more springy, I was able to keep all the foam inside. I docked a couple stars because I’m not able to provide a consistent experience with these pillows across all three beds in my home. If you need a pillow, order a set and be happy. If you want a bunch of memory foam pillows throughout your house, maybe look elsewhere as these may not all be identical.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on January 17, 2026
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    Mari
    Omaha, US
    ★★★★★ 5
    Very cool and comfortable pillows. Great value.
    Color: Cooling Blue Cover, Size: Queen (Pack of 2)
    These pillows are everything described on the site. They do retain shape and don’t flatten out after sleeping all night. They are nice and clean looking and comfortable. The fit on my king size bed is perfect cause I prefer the size to king size. Haven’t had to wash them yet but I have had other pillows with the same material inside and the wash ability is great.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on May 17, 2026
    J
    Verified Purchase
    Joe
    Massapequa, US
    ★★★★★ 5
    Great pillow
    Color: Cooling Blue Cover, Size: Queen (Pack of 2)
    The pillows feel great. Being able to remove portions of the interior allowed me and my wife to have a perfect fit. They do stay cool which seems to have helped with my restlessness.
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    Reviewed in the United States on May 12, 2026

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