STUnlocker iOS App for Shimano motors is available
- Thread starter vadII
- Start date
raymal
Member
I've just tried rolling back my f/w from 4.9 to 4.8 using the android bluetooth method; I've followed all the steps in the instruction doc' and the youtube video and can see the new 5.8 f/w files stored on my phone as specified, when the etube app is connected to the bike it can also see the new 5.8 f/w available for loading to the bike. However, when I attempt to carry out the update, I get 'f/w file for DU-E8000 is void. Download the latest version of s/w?' message. Wifi and mobile reception have been switched off prior to the rollback as instructed.
Anyone (Vadll / Raine?) got any thoughts or guidance on what's amiss here?
Thanks in anticipation
- Thread starter
- #243
It's because you didn't copy ALL files from archive into your phone
raymal
Member
OK thanks - the ones I've got are:
2DUE8000-D.5.8.0.dat x 2 (both 83.11kb with date of 9/9/2020)
2DUE8000-M.5.7.1.dat (112kb dated 17/9/20)
2DUE8000-D.5.7.1.dat (110kb dated 17/9/20)
They were all d/loaded from the 'Downgrade original firmware of a STEPS motor using E-Tube App' document which I assumed either yourself or Raine had authored so any idea what's missing?
raymal
Member
Yep....that's exactly what I've got on my phone (all stored under Android/Data/........./FW/). When I fire up E-tube on the phone and open 'Updates' I can see an update available for the motor but when I go to install it I get the aforementioned message.
- Thread starter
- #247
I've no idea why you got such messages. But it means only one: you did something wrong.
raymal
Member
Hmmmm ok thanks I'll go through the process again from scratch. Assuming I get it to work, how long does it take to reload?
raine
E*POWAH Master
link to this doc?
raymal
Member
It was a link on a reply from Vadll, I think, to a question from another member about downgrading f/w which, unfortunately, I can't locate at the moment but it gave step by step instructions and also gave this link to the earlier version f/w - .
The document also gave a link to a procedural Youtube video at All the steps were managed successfully up to the point of transferring to the bike (from Samsung Galaxy S10+ if it makes any difference) when I get the error message. Still puzzled but holding back on further attempts for fear of bricking the bike
Thanks
The document also gave a link to a procedural Youtube video at All the steps were managed successfully up to the point of transferring to the bike (from Samsung Galaxy S10+ if it makes any difference) when I get the error message. Still puzzled but holding back on further attempts for fear of bricking the bike
Thanks
raymal
Member
Raine - just found the linked instructional document but still trying to locate the post which gave it:
I assumed, possibly incorrectly, that either yourself or vadll were the authors?
I assumed, possibly incorrectly, that either yourself or vadll were the authors?
raine
E*POWAH Master
Well for sure it's not me...I was just asking to see if whoever wrote it was claiming to be me.
I did make a downgrade guide/package back when I was still in charge of the ST Unlocker manual (not anymore), but I decided not to release the guide... it looked like this (heh):
raymal
Member
Ok thanks for the clarification and I'm holding off on f/w revision for the time being
- Thread starter
- #254
What is the error message? Why did you posted link to .EXE file with FWs, instead of ZIP file which is suitable for Android/iOS?
Anyway, this manual is 100% correct and should work for EVERYONE
This is some strange fear of using the official Shimano E-Tube App, which Shimano themselves advertise everywhere, including for firmware updates...
raymal
Member
The error message was detailed in my original question a few posts back. I posted the link containing the .exe's in response to raine's query about the document I referred to - not sure what the issue is to be honest? And as far as the accuracy of the manual is concerned - what manual? I followed a document which was linked in a post about downgrading Shimano f/w and it didn't work for me - end of. And as far as a strange fear of using the E-tube app - not on my part, just a fear of bricking my bike if it fails
- Thread starter
- #256
The one YOU posted here.
raine
E*POWAH Master
just a fear of bricking my bike if it fails
Dude, just to be direct here - everyone who says what you just said should not try the downgrade. Just use the tuning parts of the app and enjoy the extra features, and let go of trying to derestrict because derestriction is pushing your system to do things it wasn't meant to do.
We see this over and over... someone tries the downgrade, encounters a problem, then blames the STUnlocker app (or posts in this thread) which is funny because you don't even use the STUnlocker app to downgrade! Doing a firmware downgrade is through the E-Tube app... and has nothing to do with requiring the STUnlocker app. It's a totally separate situation. And there's a reason why there's not a definite "how-to" on derestricting, because it's not foolproof.
The fact of the matter is this: YES - there is a chance you will brick your bike if it fails. There is NO GUARANTEE and NO FOOLPROOF way to derestrict. People get it done with zero problems, other people brick their bikes. People derestrict and upgrade and derestrict over and over with no errors, and other people fail at their first try and have to find a Shimano dealer equipped to reset the STEPS system. And likewise, YES - there is a chance that if you brick or damage your system, Shimano will know, and can void your warranty. Once again, you're modifying what was intended, and the STEPS system logs a lot of data that the user cannot access or erase. Well guess what? Part of that data can easily tell Shimano if the system ran beyond the normal parameters.
Anyhow, no one knows where you got your firmware files from (do you even know who the source is?) but if you're having trouble, for all you know that might be the problem. Try FW from a different source.
P.S. Yes, my last post was a .jpg, and if you read the text I clearly explained why
raymal
Member
Hey guys - maybe just chill!! To clarify - I wasn't trying to downgrade in order to derestrict my bike, it's already running on US speed restrictions; the problem I was attempting to resolve was an occasional system error which I believe stems from a recent 4.9 upgrade. At no point have I blamed Stunlocker for anything or suggested shortcomings in the application. And just to clarify, I do not have any warranty concerns as it's expired, I was simply asking a question about a procedure that has generated a fair amount of questions on this forum and which didn't perform as expected following the 'manual' that vadll quotes (which also contains the f/w files he listed in a post above to answer the point about their source in the last para above). As stated in an earlier post on this subject - I'm no longer pursuing the downgrade just in case it does 'brick the bike'.
In the interests of Customer Service advice, I'll just add a final comment before I bow out on this subject - writing as someone who's paid for the Stunlocker upgrade, the aftersales support (not directly requested I might add) received from the Stunlocker development team on a pretty simple question has been somewhat less than constructive
Enjoy the rest of your weekend
In the interests of Customer Service advice, I'll just add a final comment before I bow out on this subject - writing as someone who's paid for the Stunlocker upgrade, the aftersales support (not directly requested I might add) received from the Stunlocker development team on a pretty simple question has been somewhat less than constructive
Enjoy the rest of your weekend
raine
E*POWAH Master
In the interests of Customer Service advice, I'll just add a final comment before I bow out on this subject - writing as someone who's paid for the Stunlocker upgrade, the aftersales support (not directly requested I might add) received from the Stunlocker development team on a pretty simple question has been somewhat less than constructive
LOL "constructive" what? Jesus...
maybe "chill" with the "paying customer" response. That has nothing to do with the course of the current conversation. You're not my customer. I am not part of some "development team". Remember - you're the one who originally said:...and that's what happened. You asked something in the STUnlocker thread about the E-Tube app and rolling back firmware... referencing a doc on the Internet that was not from anyone here...
...and I decided to give you my thoughts, because you asked for it.
It's simple.
GLHF
Hi, I have an EP8 RS motor on firmware 4.1.2 and stunlocker app (not premium yet). If I want to change the region am I right in thinking the process is:
1. Downgrade to DU-EP800 FW 4.0.2 (using file linked in document above)
2. License stunlocker and change region
3. Use Shimano app to upgrade FW back, it will maintain new region setting
1. Downgrade to DU-EP800 FW 4.0.2 (using file linked in document above)
2. License stunlocker and change region
3. Use Shimano app to upgrade FW back, it will maintain new region setting
- Thread starter
- #261
Yes
Thanks for the quick response. Do you know if this has been successfully tested by anyone on an EP8 RS motor?
- Thread starter
- #263
Speed derestriction works fine on EP8 RS as well on any other EP8
JBarras
New Member
Did you also try 85nm option on EP8 RS? Does it 100% work? is the power delivery and standard functions working as expected?
JBarras
New Member
Thanks Phil
RickBullotta
E*POWAH Elite World Champion
I’ve decided to stick with the Shimano app for my EP8 RS - no point in risking warranty issues at this stage. On my previous bike, I needed Stunlocker to change the wheel diameter when I switched between 27.5” and 29er wheels. New bike is 29er only, already set to USA limit, and the Shimano app lets me tweak the settings I need. But Stunlocker is a great utility and I’m appreciative that Vadll created it!
JBarras
New Member
Appreciate this feedback. Ive found myself held back a lot with the EU/UK 15mph limit. So im mostly intrigued about increasing this, even if just to USA 20mph.
spacemonkey
Member
I bricked my brand new bike...trying to downgrade...did everything as explained ep8 motor...
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