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Hey Ninebot, Xiaomi, Segway Mini / Mini Pro users, here is the downgrade pack for your device (Xiaomi, Ninebot, Segway Mini / Mini Pro) with an documentation how to do it. It will downgrade your device from firmware version 1.2.8 back to 1.1.7. YOU DO THIS AT YOUR OWN RISK, I'M NOT RESPONSIBLE FOR BRICKED DEVICES OR THINGS THAT HAPPEN TO YOU OR YOUR DEVICES BECAUSE OF THIS DOWNGRADE! It looks like Ninebot has changed something in the App. You need the Ninebot App < 3.6. For Android you will find the old APK's here apkmonk.com/app/cn.ninebot.ninebot/#previous Please read the "NineBot Mini Downgrade Readme.pdf" insite the 9BDgrader.rar Just to be sure, that Ninebot (the company) has the right file on their server, here are the hashes from the original Mini_Driver_V1.1.7.zip MD5 Checksum: 94273806959B2BB5FD8C50F6F7323846 SHA-256 Checksum: 2A7743E35DE0136DE46FC2A2D6BA9187CB728738C6F8D7FCC022BD4CA05FED57 When you download this file from Ninebot, check if the checksums are the same. Upload the "Mini_Driver_V1.1.7.zip" here http://onlinemd5.com/ if the checksums are identical you are safe. Good Luck! --- POSADIS ISSUES: Posadis Server has to be downloaded from here: http://prdownloads.sourceforge.net/posadis/posadis-0.60.6.exe After the Download, install it to C:\9BDgrader START WEBSERVER ISSUES: Please take a look at c:\9BDgrader, there is an error_log. Open the File with the Notepad. When it looks like this, there is another webserver like Xamp, Wamp, Apache or ISS running on your machine. Please disable this webserver temporally ____ [09/Jun/2016:14:06:16 +0200] Failed to bind the socket, error #50. Probable reason is that another daemon is already running on the same port (80). ____ SKYPE uses Port 80 too. Please close Skype, kill the Skype process in taskmanager and try again. DOWNGRADE ISSUES WITH ANDROID: - After you change the DNS Server on your Android Device please reboot your device, then open the Ninebot App for the downgrade DOWNGRADE ISSUES WITH IOS: - Completely close the Ninebot App (kill the task) - Change the DNS Settings in IOS to your Server - Enable Flight Mode (this will wipe the DNS cache) - Disable Flight Mode Open Ninebot App, it should now see the new 1.3.0 Firmware (which is our loved 1.1.7). --- ATTENTION: IT IS NOT SAVE TO USE A PRE CONFIGURED DOWNGRADE SERVER FROM SOMEONE ELSE. THE OWNER OF THAT SERVER CAN SEND YOU ANY FIRMWARE HE WANTS. THIS CAN BRICK YOUR DEVICE. IF YOU USE SOMEONE ELSES SERVER, YOU HAVE TO TRUST HIM! INFORMATION: Some routers have an option to prevent the use of alternative DNS Servers for security reasons. You have to disable this option during the update Process in your router. List of routers: - some vodafone routers (Information will follow) Denniss aka Ninehood :-) 9BDgrader.rar You will find questions and success storys about the downgrade here:

FIRST SOLUTION : AN EXTERNAL DIY BATTERY Today I thought I would do a small external battery for my 9Bmini. I had already bought a small pouch (for bike) in this regard, I still have a good stock of cells (NCR18650B 3400mAh), a compact BMS with wires and all consumables. So no excuse not to put it. And here's the result : Here the challenge is to be able to put 15 cells (for just a 190Wh) following the format of the cover (yeah otherwise there is no point) So there are two sets of six cells glued offset (to make it more rigid) and at the end, there are 3 cells (glued in triangle shape, for the same reasons) The packaging is not very nice either regular because I have recycled old packaging already used. I make a hole (with a soldering iron) to bring out the power plug, the charging socket, it is accessible from the top of the zip. The goal is to have easy access to the charging socket, without having to remove the battery or remove the cover (even if it's quick and easy). Once this little world inside the pouch closes perfectly. And may the soldering iron is hot, I make a GX12 -4P to LEMO adapter in order to use this external battery or on the mini or the 9B1. The battery creates a slight imbalance toward the back but nothing too bad. The cover fits perfectly on the mini, without causing any problem. And finally, without this being the initial target, this package also attaches very easily on the wrist of the 9B1 (though aesthetically it's less that).

Today I have found the solution to put in parallel my external battery with the original battery. The goal is to raise battery capacity to have longer ride with my mini. You can see on this picture that the orignal battery is missing but the Mini still switch on. This is the first video about my hack, more details will follow... https://www.youtube.com/watch?v=whoXj2hsboA

Hi, this is the unknown error which never happened before. After parking for 3 days with a fully charged battery, I turn it on today and it is like this video clip. I don't think the battery is out of order because previously I use and charge it daily, moreover, my other 4 Ninebot mini which have been activated at the same day still have no problem. I tried to charge it but nothing shown in a battery display. Any idea?

Hello I bought 30 MINI ninebot on alibaba and I have a problem with unlocking the barrier, the equipment is maximum 4 km / h because i can not enter the Polish phone number, only shows me directions +86, 86, 886, 852, 853, how can i activate ? I need quick information because I have rental equipment and want it to work Tomek

Just here to give my opinions on the Ninebot Mini and why its a more dangerous than any other EUCs and see if anyone else here agrees with me. The argument: Last year before Christmas I bought a Ninebot Mini I had a go on it and realized not only was it less fun because you were required to go in a straight line but significantly more dangerous over riding any EUC. In fact I think the Mini should be speed limited to only 10-12km/h max and not 18! When riding at higher speeds and the floor is uneven you are having to adjust your body to the way the road is. For example when you ride on a slope where your only ONE of your wheels are lower or higher you would have to tilt to the direction that is higher to remain balance. For eg: If you are riding on the side walk and on your left there is a wheel chair ramp making the left wheel dip lower than the right wheel for a short bit you will have to quickly adjust your body to the right so remain balance if you stood still you will lose control. The other concern is that when you do so to maintain your centre of gravity you could knock that pole that controls the left or right, this has also become a major issue when riding on uneven surfaces. Unlike riding on an EUC the centre of gravity is between your foot at the point where the wheel hits the floor making it easy to glide over rougher terrains. On the Ninebot mini you are forced to adjust your body to the way the terrain is much more than what is required from an EUC. The benefit however of the Ninebot Mini is that you are able to pick it up quickly, and stand in place really easily. In short...after owning the Ninebot Mini I quickly sold it(without even owning it for 2 weeks) knowing the dangers that would possess with it and made a hefty profit during the Christmas season. My first actual post on the forum, thanks for reading Jack