Anduril2 Firmware for Lume-series Drivers

Latest Anduril2 .hex binaries for some Fireflies and Hank (Intl. Outdoor) flashlights with Loneoceans Lume1 / Lume X1 drivers.
AVR32dd20 & ATtiny1616 builds are based on this Anduril2 release.
  • What are the Lume drivers? Read Fireflies / Hank, or see below
  • Which hex file to choose?
    • See the version code on your driver PCB
    • e.g. For a Hank light with Lume X1 and code "B0224": use HWID 0281
    • Right click and "Save Target As" to download the .hex binary
  • Official builds will be avaliable once merged: https://github.com/ToyKeeper/anduril (pull request pending)
  • Anduril version check: blinks out HWID + 0 + 7 chars of the the SHA-1 hash of the github commit (letters = buzz)
*Note for Hank HWID 0281: I currently recommend using the firmware binary on this page instead of the one in ToyKeeper's repository for optimal Lume X1 performance and lower firefly modes.

  Fireflies PCB Rev & Date Code HWID Binary (MCU) Configuration
Fireflies
Lume1
(6A Buck + FET)
Rev B 1120 0443 (Attiny1634) 6A Buck + FET
Rev C 1022
Rev D 1023
0451 (Attiny1616) 6A Buck + FET
Rev B  1120 (no FET) 0444 (Attiny1634) 6A Buck Only
Rev C 1022 (no FET)
Rev D 1023 (no FET)
0452 (Attiny1616) 6A Buck Only
Fireflies
Lume10
(10A Buck + FET)
Rev A 0126 0453 (AVR32dd20) 10A Buck + FET
Advanced Aux.
Fireflies
Lume X1
(Boost)
Rev A2 0123
Rev A3 0724
0461 (Attiny1616) 40W Boost
B 0224
B 0225
0462 (AVR32dd20)
0463 (AVR32dd20)
40W Boost
32W Boost
Fireflies E12C
(AMC7135 + FET)
N/A 0445 (Attiny85) Legacy
Hank PCB Rev & Date Code    
Hank / Intl-Outdoor
Lume X1
(Boost)
B 0224
B 1024
0281* (AVR32dd20)
40W Boost
B 0225 0282 (AVR32dd20) 32W Boost

Updated: 2026-Apr-14
 


What are the Lume drivers?

The Lume series of drivers, beginning with the Lume1 in 2020, are high performance LED drivers designed specifically for small but high-power handheld flashlights. These drivers were created to provide practical, thoughtfully-designed electronics for flashlight enthusiasts.

Every Lume driver features true constant-current output regulation with no PWM. They also feature Ultra Dynamic Range (UDR) for vanishingly low moonlight / firefly modes, and adopt the Anduril2 open-source user interface by ToyKeeper. All drivers use a synchronous DC/DC constant-current architecture for high efficiency and maximized runtimes without sacrificing output capability.
  • Lume1 uses a buck + FET design and is designed for 3V emitter configurations, combining the high-efficiency and practicality of a constant-current buck (up to 6A), with a high output on turbo.
     
  • Lume10 is an evolution of the Lume1 and features a 10A high-efficiency constant-current buck + FET topology while maintaining impressive turbo output. It is designed for 3V emitter configurations and pairs well with higher power flashlights. The Lume10 introduces Advanced Aux. capability for more complex auxiliary RGB functions.
     
  • Lume X1 uses a boost topology capable of driving 6V, 9V, or 12V (2S–4S) emitters at up to 40W from a single 21700 cell, allowing smooth, PWM-free ramping from turbo all the way to UDR moonlight. With 18650 cells, it is recommended to operate at 32W.

  • Lume X1-C is a variant of the Lume X1 and supports Advanced Aux. capability, but is otherwise identical to the Lume X1.
Each driver design is optimized to balance fun, performance, and efficiency, with cost and manufacturability.

Some variants feature on-board USB-C charging, reverse charging (powerbank) in Momentary mode, and other auxiliary features. All drivers have programming pads to allow manual re-flashing of custom firmware builds or updates.

Appreciation goes out to Jack from Fireflies and Hank from Intl. Outdoor for their partnership and for adopting the Lume series drivers, as well as to the flashlight community for your support.

I hope you enjoy using these drivers as much as I did creating them!


Flashlight Garage Sale!

Give a new life to these flashlights! Offering a selection of flashlights in various conditions for sale, from like-new to used or repaired at a discount.

Some of these are brand-new, some are engineering prototypes, some of them have issues and/or are repaired. Each listing includes detailed descriptions of the flashlight’s condition, included parts, and accessories if any. Please read carefully before purchasing, items are sold as described with no warranty unless otherwise mentioned. Please feel free to ask questions if needed.

Shipping and handling within Continental USA via regular USPS typically starts at $7.00 for a single flashlight depending on location. For multiple flashlights, please contact me to calculate a total shipping cost. I can ship overseas but shipping costs will likely be prohibitively expensive.

Batteries will NOT be included for any flashlight due to complexity in shipping lithium batteries.

Payment is via Paypal only. Prices listed are in USD and do not include shipping. If you are interested, please contact me at loneoceans (at) gmail (dot) com with the specific listing and your shipment address.

Please check back frequently as I will update this page whenever I have more flashlights for sale. Thank you.

Fireflies X4Q Comet

Matte Black
FFL351A 5000k
CRI 95
$40 - Sold

This is a good condition Fireflies X4Q (2025 version) in Matte Black, updated with the latest Anduril firmware (HWID 0462 / 2026-02-18). Emitters are FFL351A 5000K, and comes installed with the raised switch ring. The flashlight had a small mechanial contact issue due to body-tube tolerances but has been fully resolved via solder contacts on the driver ground ring. The flashlight is fully operational. Body near the tail has a small ding in the anodization (see photo). Threads show some sign of use. Comes with box, clip, additional optic, tail-magnet, spare O-rings, manual, but does not come with lanyard ring or lanyard. O-ring has been upgraded to a better fitting orange ring. All functions are tested working.
Sold Items    
Fireflies E07X Cannon V1

Matte Black
XPL-HI 5000k CRI70
Sold

This is a great condition Fireflies E07X Cannon (V1) with the Rev D Lume1 driver and updated to the latest Anduril firmware (HWID 0451 / 2026-02-18). Comes with '2023/24-vintage' box and default accessories including extra diamond-black PVD coated magnetic tailcap, included matte-black non-magnetic tailcap, pocket clip, lanyard, spare O-rings, replacement lens, and manual. Emitters are the now-uncommon XPL-HI 5000K, with high output on turbo, and measures -0.0002duv for a very pleasing, almost neutral tint that belies its lower CRI. All functions tested and working including charging. PVD magnetic tail-cap has some cosmetic marks from being used but is otherwise fully functional. Some threads show some sign of use. Note that this is the V1 version.
Fireflies E07 Original

Limited Edition
 Full Titanium

 Nichia 219B SW45K R9080

Body Damage
Sold

Note - this flashlight has mechanical damages, please read!

Own a piece of history! This is a fairly rare Fireflies E07 (original version) Limited-Edition Full Titanium flashlight, with ice-blue AUX LEDs (including the switch), 25 deg TIR lens, 98% AR Coated glass lens, and takes 21700 cells. Emitters are the highly sought after Nichia 219B SW45K R9080 4500K LEDs (x7). Unfortunately this unit has significant external damage to the head. Head threads also exhibit severe galling and the body tube will not screw fully into the head; rethreading may help. Electronics and LEDs test OK when powered with an external power supply. Body tube, tail cap, and bezel appear in good condition. Item is sold as-is.
Fireflies E90 Blaze TIR

Ember Red
FFL707RD 4200k CRI95 Rosy
Sold

This is an excellent/near-mint condition Fireflies E90 Blaze TIR with the Rev D Lume1 driver, updated with the latest Anduril firmware (HWID 0451 / 2026-02-18). Includes lanyard ring, clip, lanyard, manual, and spare O-rings, and box. Some threads show some sign of use. All functions tested and working including charging.
Convoy S11 Host

Matte Black
Sold

This is a Like-New condition Convoy S11 26650 flashlight host (body only). It does not come with any driver or emitter. Does not come with box but will be carefully wrapped. Perfect for modders building their own flashlight from scratch.
Fireflies L70 Helios

Navy Blue
FFL707A 4000K CRI95 Rosy
Sold

This is a like-new condition Fireflies L70 Helios updated with latest Anduril firmware (HWID 0462 / 2024-11-16). Comes with all default accessories including 2-way pocket clip, lanyard, spare O-rings, manual, original box. Emitter is a 4000K CRI95 Rosy FFL707A. All functions tested working. I can throw in a new FFL clip-on headband for an additional $4.
Fireflies X4Q Comet

Navy Blue
FFL351A 5000k CRI95
Sold

This is a like-new condition Fireflies X4Q in Navy Blue, updated to the latest Anduril firmware (HWID 0462 / 2024-11-16). Emitters are FFL351A 5000K. All functions tested and working. Comes with original box and default accessories including two-way clip, extra optic, spare o-rings. This unit does not include the lanyard. Note that this X4Q is the version prior to the '2025' model with a less aggressive body knurling.
Fireflies X4 Stellar

Navy Blue
FFL351A 6500k
Sold

This is a good condition Fireflies X4 Stellar updated with latest Anduril firmware (2024-09-07). Missing most accessories, only comes with 2-way pocket clip, lanyard ring, tail-magnet, original box. Does not include other TIR optics or accessories. Emitters are FFL351A 6500k CRI95 for a cool white beam. Spring updated with cylindrical high-current Be-Cu spring. Flashlight previously had a hardware issue due to a damaged component on the PCB. Driver has been repaired fully. All functions fully tested and working including charging. Internal threads show some sign of use.
Fireflies X4 Stellar

Wine Red
FFL351A 3700k
Sold

This is a Like-New condition Fireflies X4 Stellar updated with latest Anduril firmware (2024-09-07). Comes with all default accessories including 2-way pocket clip, lanyard ring, lanyard, tail-magnet, spare O-rings, two extra TIR optics, manual, original box. Emitters are FFL351A 3700k CRI95 for a neutral-warm beam. Spring updated with cylindrical high-current Be-Cu spring. All functions fully tested and working including charging.
Fireflies X4 Stellar

Navy Blue
FFL351A 4000k Rosy
Sold

This is a very good condition Fireflies X4 Stellar updated with latest Anduril firmware (2024-09-07). Comes with all default accessories including 2-way pocket clip, lanyard ring, lanyard, tail-magnet, spare O-rings, two extra TIR optics, manual, original box. Emitters are FFL351A 4000k CRI95 for a neutral-warm Rosy beam. Spring updated with cylindrical high-current Be-Cu spring. All functions fully tested and working including charging. Internal threads show some sign of use.
Fireflies L70 Helios

Desert Tan
Cree XHP70.3 HI
5000K CRI70
Sold

This is a Like-New condition Fireflies L70 Helios updated with latest Anduril firmware (2024-11-16). Comes with all default accessories including 2-way pocket clip, lanyard, spare O-rings, manual, original box. Installed emitter is a Cree XHP70.3 HI 5000K CRI70 not usually offered by Fireflies. All functions tested working.
Set of 3 P-Series Fireflies flashlights

P01, P02, P03
Red Body

Sold

This is a set of 3 Fireflies P-series flashlights in Red Body colour, all flashlights in Like New condition. Turns on with battery inserted. No extensive testing conducted.

P01 - 14500. Red aux, red button LED. Emitter tests as a 5000K CRI90 emitter but unclear which exact emitter is used (appears to be Nichia 519A).

P02 - 18650. Red aux, red button LED, Osram CSLNM1 6500K emitter. Comes with all default accessories.

P03 - 18350. Red aux, red button LED, Osram CSLNM1 6500K emitter. Comes with all default accessories.

Loneoceans Laboratories 2020-2026