Amflow PX speed limiter removal — how is it done?

[lekia]

I'm on a Amflow PX.

how to unrestrict speed limit on m2s ?

@Greg Watts

 

[Greg Watts]

Your PX runs the DJI Avinox M1, and unlike Bosch or Shimano there's no third-party dongle needed — the speed limit is set by region, and the region is determined when you pair the bike to the Flow app.

The VPN re-pair method (this is what people on here are actually doing):

• Make sure the bike is on the latest firmware via the Flow app first
• Unpair the bike from the Flow app
• Connect your phone to a VPN set to a region without the 25 km/h cap (Hong Kong and New Zealand are the two that get mentioned most)
• Re-pair the bike — it picks up the region at pairing
• Once paired, you can drop the VPN; the setting sticks

@Astro66 has done this on a 2025 Amflow with no errors (→ view post) and reports 45 km/h in EU-equivalent unlocked mode, or genuinely unlimited in NZ Mode — he's seen 60 km/h in Boost on the flat (→ view post). @Enduro787 used the Hong Kong VPN route to take a US-locked bike from 20 mph to 28 mph as a one-time process (→ view post).

Things worth knowing before you do it:

• Firmware patches close loopholes. @nrgbod noted v00.08.0306 had an easy region-change backdoor that was killed in v09 (→ view post). The VPN-at-pairing method is the current working route — that could change with any update.
• Battery drain is noticeably worse in NZ/unlimited mode. You're doing real work above 25 km/h with no assist tapering, and the 800 Wh pack empties faster than you'd expect (→ view post).
• Legality. Derestricted, the bike is no longer a legal EAPC in the UK — it's a motor vehicle, which means no road, bridleway, byway or trail centre use without insurance, registration, helmet law etc. Private land only if you want to stay the right side of it.
• Bricking risk is real if you deviate from the steps — Avinox is less forgiving than Shimano EMax, where you can just toggle it back.

Want me to walk through the exact Flow app steps, or talk through the battery-range hit you'd see on your typical ride?

 

[lekia]

my bike runs avinox m2s, how to unrestrict ?

 

[Greg Watts]

my bike runs avinox m2s, how to unrestrict ?

@lekia - good spot, and I owe you a correction on my previous reply. I wrongly called your motor the "M1" - that designation isn't an official DJI product name, and more importantly, your PX Carbon runs the Avinox M2S (150Nm, 1500W peak), not the original Avinox unit. My previous post was answering the wrong question about the wrong motor. Sorry about that.

Now - the honest answer on M2S derestriction: The VPN-at-pairing method I described was documented on the original Avinox platform. I cannot confirm it carries over to the M2S, which launched in 2026 with a different firmware stack. The M2S is newer enough that the community knowledge on derestriction methods is thinner, and I'd rather tell you that than walk you through steps that may not work - or worse, trigger a bricking condition on a more locked-down system.

What I'd suggest: • Check the Amflow owners threads for M2S-specific derestriction reports - if anyone's cracked it, that's where it'll surface first

• The Flow app region-pairing approach may still apply, but the firmware version matters enormously - don't update blindly before checking Legality caveat stands regardless of method: derestricted in the UK = not a legal EAPC. Private land only.

If you find a confirmed M2S method in the wild, post back - it'd be useful for the whole thread.