Site Logo



Specialist in Multirotor Tech & FPV Equipment

We ship worldwide - Same day shipping on all orders placed before 4pm - FREE delivery on UK orders over £99 <1kg*

ESC firmware can make the difference between super stable flight and erratic flight. This handy USB programming tool allows you to quickly and easily update the firmware of your ESC by connecting directly to the ESC's signal wire and then to the USB port of your PC. With it, there is no need to cut open the heat shrink or use any additional interface components. Simply plug it in and flash! It's designed to work with Atmel based ESCs, such as the DYS SimonK (SN) and BLHeli (BL) series ESCs

USB Driver Download: USB to UART Bridge VCP Drivers

BLHeli Flashing Software Download: BLHeliSuite 

SimonK Flashing Software Download: kkmulticopterflash

Useful instructional video.

DYS ESC USB Linker Programmer for SN16A SN20A SN30A SN40A BL16A BL20A BL30A BL40A (if you are using the new DYS XM series ESCs, you need the V2 linker).

Compatibility: Atmel based ESC with the SimonK bootloader running SimonK or BLHeli firmware.


  • 1x USB Linker

Sorry, we don't currently have any product related advice for this item. For general tips, tutorials and help please check out our Multirotor Beginner's Guide. Alternatively feel free to ask us a question.


By Neil Taylor (not verified) on


I have DYS MB30030  30a esc, which one if any of the two DYS usb linker tools would i require to re flash my esc.




Add new comment

UK Express Shipping - Next Day Delivery on orders placed before 4pm

All information relating to shipping and delivery is stated here. Should you not find what you are looking for, please contact us.

UK Postage: Low value, small packages are sent using Royal Mail First Class. Larger and higher value orders are sent with Royal Mail First Class Recorded delivery. Consignments exceeding 2kg will be shipped using DHL or by a courier of our discretion. All high value orders are fully insured and will likely require a signature on delivery. Shipping cost are calculated once items have been been placed in your basket. We process orders Monday to Friday. Here at Flying Tech we pride ourselves on our quick turnaround of orders. If stocks levels allow, we aim to dispatch orders placed before 4pm the same day - please note that the DHL cut off for same day collection, next day delivery is 11AM. Otherwise orders will be dispatched within 48 hours of receipt of payment. A confirmation email will be sent when your items have been dispatched. If you wish to change your order, please contact us promptly, as we won't be able to make amendments once the order has been shipped.

FREE shipping in the UK on orders over £99 (this is a signed for service and insured to a maximum of £40). Please note that the offer only applies to orders with a total weight under 1Kg and that a few products are exempt from the offer.

We Ship Worldwide

International Postage: We are based in the UK, but ship to most worldwide destinations. Postage rates are calculated by the weight and shipment location, the price is quoted during the checkout. Low value order can be sent by Air Mail, but are not insured. Higher value, heavy goods will be sent with DHL or an alternative courier. Orders shipped outside the EU may be subject to customs charges. These charges are additional to any delivery costs and will need to be paid by the recipient.

Flying Tech International Shipping with DHL Express

For our international customers who require a rapid delivery we off a DHL Express service. DHL Express offers NEXT DAY delivery to most European destinations and a very fast delivery for countries further afield, generally 2-3 days. For country specific estimated transit times, please refer this download.

We reserve the right to modify, remove or add to any of these services at any time. We endeavour to ship all items as fast as possible. If you would like an alternative shipping arrangement to be made please contact us.