SKU: 73767314442

RadioMaster ExpressLRS USB UART Flasher V2

$13.49 $14.99
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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 Products, Receivers, 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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    CatLady
    Dallas, US
    ★★★★★ 5
    Exactly as described
    Size: Throw XL (50x70 Inch), Color: Navy
    I wanted to get the little longer size, to help cover my feet while I sleep, because I sleep in a recliner due to back issues. Wow! The material is super soft, and keeps just at the right temperature of warmth at night, so the material breathes well. The extra 10 inches is a godsend now.. My feet stay warm all night long now. So the fit is perfect! The quality of the blanket is great, I’ve had no problems with it. Although my white watch band is now blue.. so I guess the color likes to bleed a bit. I haven’t washed it yet, but I will wash it either alone or with dark colors, because I believe it will bleed its color a bit in the wash & perhaps in the dryer. Still, with it being so comfortable and soft, I would highly recommend this blanket to everyone!
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    Reviewed in the United States on April 17, 2026
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    Cole Daugherty
    Battle Creek, US
    ★★★★★ 5
    Buy it. Truly amazing.
    Size: California King (102x96 Inch), Color: Black
    It's a bit thinner than I thought and comes in a surprisingly small box but that doesn't matter at all because there's so much blanket and it's super soft, it feels like covering up with a cloud. Perfectly warm, perfectly cool and perfect for sharing the bed with a blanket hog (or your dog babies). Folds up nice and tight for storage too which is always a plus. Buy this, it's worth the price forsure.
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    Reviewed in the United States on May 20, 2026
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    demmie thomas
    Lexington, US
    ★★★★★ 5
    Blanket
    Size: Twin (60x80 Inch), Color: Grey
    This blanket is one of those go-to affordable staples—super soft, lightweight, and perfect if you want something cozy without feeling heavy or bulky. ⸻ 👍 What stands out * Soft microfiber fleece – smooth and cozy against the skin * Lightweight but warm – good balance for all seasons * Perfect twin size (60x80) – fits beds, couches, or layering * Clean, simple design – grey goes with everything * Durable stitching – double-needle edges help it last longer
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    Reviewed in the United States on April 19, 2026
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    Julie R
    Lake Worth, US
    ★★★★★ 4
    Soft and cozy, sizing seems a bit inconsistent
    Size: Queen (90x90 Inch), Color: Sage Green
    I actually ordered two of these blankets in two different colors. We had urgent need to add a bed with all new bedding (medical reasons), so I ordered these blankets in a rush. The quality of the blankets seems good. They are very soft and cozy. Lightweight, yet warm. The only issue is that two blankets that should be identical in all ways other than color are actually not even close in size. No matter how hard I try, I cannot get these blankets to line up equally. I really don't like having one blanket hanging lower than the other, especially now that this bed is just inside our front door where every visitor can see it. The king size quilt should in theory cover this discrepancy, but it doesn't fit correctly (another issue). It also means that the blankets are not equally distributed over me and my husband at night. Other than the size inconsistency, I really like these blankets and think they are good value, plenty warm for Wisconsin winters when doubled up with sheets and quilt.
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    Reviewed in the United States on February 25, 2026
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    Ant Farmer 1
    Draper, US
    ★★★★★ 5
    Soft fuzzy polyester king sized fleece blanket with no static electricity
    Size: King (90x102 Inch), Color: Grey, Size: King (90x102 Inch), Color: Grey
    I ordered the gray color because it was cheaper than the other colors, but it looks nice. This blanket was actually a lot nicer than I was expecting. It is pretty thick, very soft, fuzzy on both sides, fits the king sized bed, and keeps me warm with little extra weight. It is breathable and doesn't make me sweaty. The price was really very good, better than what I saw when shopping in local big stores. This feels great on the skin, and is much more comfortable than heavy wool blankets or quilts. When folded up it doesn't take up much room. It fits well in the washing machine. One of the best features is that it doesn't seem to generate static electricity even in dry air. In general I don't care for synthetic fibers, but I'm making an exception with this blanket, which stays clean and fluffy after extended use. I've had it 2.5 months with no problems and no manufacturing defects detected. The hem stitching is tidy and strong, very neat. I'm thinking of ordering a smaller one to keep in the car for emergencies and outings. I wish all the colors were a similar low price. I have recommended this blanket to friends.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on February 20, 2026

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