Unfortunately, you don’t know all the details. I have a Shimano XT Di2 installed. Automatic shifting is not the full functionality. The most important part is something else. I recommend reading about it or watching a video on YouTube.
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ozzybmx
Active member
I do know the details, the basic bike came with electronic shifting, if you need more, don't whinge about what you have lost.
Joecrow
Active member
Good for you, who needs updates btw how is it going with Windows XP these days?
HappyCamperIan
Member
Whilst this is an amusing response, comparing a thing that has to be connected to the internet to function to a thing that functions without the need to connect to the internet does miss the point entirely; Ozzy is correct, his full power ebike will function without risk of being hacked if he does not connect it to the internet, and the primary function of his ebike will continue to work, an OS on the other hand...
Joecrow
Active member
Will still work without a connection to the internet, my Win 11 does on the odd occasion my router goes up the creek. I am also old enough to know that computers predated the internet with many performing tasks without any connection to the outside world, so I don't think the comparison is unreasonable. Indeed those who don't update their bikes would also be more likely not to update their home PC regardless of what connection to the outside world either may be capable of!
Having said all that you are of course correct in that I was poking fun at Ozzy.
HappyCamperIan
Member
NT4 MCSE here, so very oldWill still work without a connection to the internet, my Win 11 does on the odd occasion my router goes up the creek. I am also old enough to know that computers predated the internet with many performing tasks without any connection to the outside world, so I don't think the comparison is unreasonable. Indeed those who don't update their bikes would also be more likely not to update their home PC regardless of what connection to the outside world either may be capable of!
Having said all that you are of course correct in that I was poking fun at Ozzy.
Whilst it is fun to poke fun, I guess the point I was making was that an ebike can do all the ebike things you need it to do without the latest update. Assuming of course it's not to correct a fault (good caveat eh
), whilst a contemporary OS's raison d'etra is to function online, and without regular updates you there is the omnipresent risk of being hacked 
And if you don't have electronic gear shifting, can you name any really important motor firmware updates? Over the years, I can only remember the addition of eMTB mode and an increase in maximum power to 750 W and torque to 100 Nm in new motors. The rest are minor fixes and attempts to remove speed limits.
The conversation was about the Shimano Di2 electronic shifting system.
I’m not a fan of updates. 100 Nm is useless for me — it’s too much, and I don’t use it. eMTB+ is the meaningful update.
The conversation was about the electronic shifting system Shimano Di2.
Electronic gear shifting is still a special case, but we are discussing a global issue here—the removal of restrictions and new firmware.
Joecrow
Active member
Just a reminder to everyone that in addition to the eMTB+ and other new modes, the 100Nm, and Shimano eShift updates in 2025 we also got an improved Flow app which can now handle multiple bikes, navigation that will exactly follow downloaded routes and an electronic battery lock. That is just what I remember there maybe more. If Bosch has only half as many improvements 2026 I really hope I can still use any new updates without compromising Rudi's configuration, time will tell but turning off updates for ever is unlikely to be an option for me so fingers crossed.
ozzybmx
Active member
Having said all that you are of course correct in that I was poking fun at Ozzy.
Bit of a difference in a 20+yr old operating system and a bike update 6 months old but thanks for your concern all the same, my Windows 98 still does the job.
Mario Antony
Active member
eMTB+ with the long overun has RACE mode, from CXRace engine, is worth of reference.Just a reminder to everyone that in addition to the eMTB+ and other new modes, the 100Nm, and Shimano eShift updates in 2025 we also got an improved Flow app which can now handle multiple bikes, navigation that will exactly follow downloaded routes and an electronic battery lock. That is just what I remember there maybe more. If Bosch has only half as many improvements 2026 I really hope I can still use any new updates without compromising Rudi's configuration, time will tell but turning off updates for ever is unlikely to be an option for me so fingers crossed.
As any Technological device now days, we are eager to install new updates, but after initial euforia, everything goes to normal, and most of us, wouldn't notice, if the update, actually downgrade some features.
Thing is, with time, people use what they"ve always used.
It requires real persistence, to gain new habits (like using new features), unless it's really something remarkable, and sensorial experience has really unbeliveable good results, that you'll want everytime, or use it most of the time.
Of all the updates Bosch has made since 2023, the only true and remarkable feature, that I find most beneficial and I use it, is eMTB+
In resume:
Best update from Bosch = eMTB+
Best update from Rudie = Unresctticted ebike
I'll certainly be more than happy having the bike as is, not updating, even if it's offered "MOWPOWA".
Bmbatley
Member
What's this added text on start up after changing the speed limit about? I got the purion 400 thinking of changing to kiox 300/500. Cheers
HammerAndCycle
New Member
Its just a USA thing to comply with local laws.
Joecrow
Active member
On maybe a similar note, anyone know if it is possible to change the startup so it remembers the last assist mode (as with the standard setup) rather than always at off?
Can you please elaborate on this statement…?
Raptor
Active member
ValActionT 750
Member
For my Cube it’s thru the Flow app. Didn’t have to do anything. I opened the app and there it was. I do have the GPS module w yearly subscription.
ValActionT 750
Member
Jonie
New Member
- Mar 12, 2026
- 4
- 0
Did you do it?
Jonie
New Member
- Mar 12, 2026
- 4
- 0
I wanna do it, how much?
Be aware... https://www.emtbforums.com/threads/bosch-smart-system-32km-remote-diagnostic.44759/post-670302
But also good to know that we have Ebike Doctor to save the day!
But also good to know that we have Ebike Doctor to save the day!
sharkimano
Member
I am just curious. I got the same update done to convert to USA region with 32km/h limit. (Though in miles it shows 19mph !) However my experience is that once I hit 29km it is EXTREMELY difficult to go beyond as the motor seems to stop support unless I am going downhill. Is this the general experience about this update? I cannot figure out why Flow would Show 32km but the bike will not go faster than 29km with assist. ! Thanks.Just had the 32 kph update completed by Rudie, with no issues.
I had updated the bike and the batteries to the latest (December) update earlier.
Took about 15 minutes though you'll need a fast reliable internet as Rudie downloads some Bosch files to your device.
I set up a new user on my laptop and added TeamViewer and brought the bike into the house so it and I was dry and warm, and close to our WiFi.
On my UK based bike, the adjustable sliding scale in each assistance mode configuration now shows a max of 19 mph.
Then paid him though PayPal, selecting the business payment option.
My only issue was that the Purion 200 had no protective cover on the USB port
Thanks Rudie
Either in this thread or the similar one, it was noted that the assistance tapers off towards the maximum, it's not like a off/on switch.
As far as I understand, this is related to the wheel size settings in the app. There you can adjust the wheel circumference.
My wife’s bike has 27.5-inch wheels. It has a Bosch motor — when I ride at 30 km/h, her display shows 32 km/h. I think that by changing the wheel circumference setting in the app, we won’t actually change the real speed, but we will change the display readings by about ±2 km/h. If I’m wrong, please correct me.
This is how the power limit works in the US version—at least in Bosch controllers. It provides active assistance up to just over 30 km/h; once this speed is exceeded, the assistance gradually decreases, and above 31 km/h, there is practically none. Worse still, this pattern also applies if you change the power limit in the app to 25 km/h. In that case, it will actively assist up to 23 km/h, and above 24 km/h, there is practically no assistance. As a result, keep in mind that if you want a US-spec motor to assist up to 25 km/h, you must set the assistance limit to at least 26 km/h. Unfortunately, this cannot be changed as it can, for example, in Shimano eTuning motors, where the cut-off torque can be adjusted to the user’s preferences.
The Bosch controller with EU localization (and others with a 25 km/h limit) works much better; in fact, the assist cuts off only after exceeding 25 km/h. With US localization, the assist is actually noticeable up to 30 km/h, but it weakens significantly above that.
You're right, that's another logical explanation for the lower indicated speed before assistance reduces or stops
If you press reset in the custom screen for that speed setting, e.g Emtb+ etc it’ll show 20mph. It did this before the mod as well ( reported 1mph less)
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