TSDZ2 Bootloader firmware for 850C not working

[Evelosimo]

This is my first installation of a TSDZ2 after having installed many Bafang middrives, so I am on a bit of a learning curve with this one.
I have been trying to install the open source software on my new 48V TSDZ2 and unfortunately after it was flashed with the new firmware, the 850C display is now dead and I am unable to turn the motor on. Thinking that maybe this was because I still needed to install the open source software, I went ahead and installed it using the proper cables purchased from Eco-Ebikes without any results which is also where I got all the software from. I have been pretty careful and everything seemed to load properly and all my drivers have been updated so I am a bit clueless as to where to go from here.
I have read somewhere on ES that this may be due to the fact that I have the new controller on my motor and it is not compatible with the OSS. I am not sure if there is any OSS available yet that would work with the new controller. Anyhow I am wondering if someone that has worked with these motors recently might know where I can find the original firmware to flash the display with, if at least I could just reinstall the original 850C display software, at least I can use the ebike, nevermind the OSS for now.
If anyone has any ideas, that would appreciated.
Thx

 

[seattlesockey]

A few things to check:

What OSS version is flashed on your motor? The display firmware version depends on motor OSS you have.

Try a different USB micro cable that connects the boatloader box to your computer. Some cables are charging only and will not transmit data but will light up the boatloader box.

Cheers,
Tom

 

[Evelosimo]

I am not sure what version came with the motor, it was purchased this summer and is new, the version I installed yet could not be verified because I can’t turn the motor on and came from:

https://www.eco-ebike.com/blogs/eco-cycles-instructionals/tsdz2-motor-firmware-programming

I realized as I was looking for the version info that I actually just loaded the original version on the top of the page and did not scroll down to the OSF version further down the page. However because the display is not working, I can’t turn the motor on and it is impossible to verify wether it was successful or not.

The USB cable and Bootloader box were both purchased from Eco-Ebikes at the same time and the computer was reading the drivers fine so I don’t think that is the issue but that may be worth checking.

Could it be that there is a newer display version than the one I tried loading up that may be compatible with the one I purchased this summer? The one I tried uploading to the display is the 850-display-OSF_v1.1.0. and dates back to 2019.

Thx for the help.

 

[Blacklite]

You might have the 2021 version of the 850C, which is different to those proceeding. There are some threads on here about it.

I’d suggest trying the MBrusa firmware, there is a version released for the 2021 850C display.

https://github.com/emmebrusa/TSDZ2-Smart-EBike-860C/releases/tag/v20.1C.3-860C-NEW

 

[Evelosimo]

Thank you, I did find all the necessary info on that thread and got it working. Here is all the info needed for the new motor all in one place;

TSDZ2 programming 2021

All the software needed at the bottom of this page:

https://github.com/emmebrusa/TSDZ2-Smart-EBike-860C/releases/tag/v20.1C.3-860C-NEW

How to upload the Bootloader display firmware for 850C and 860C displays:

https://youtu.be/0efCpe-Yj50

Good instructions for display firmware update on how to set up APT burn as well as how to set up ST visual programmer for controller firmware update. Unfortunately the software update from this page did not work with my recently purchased motor and 850C display but the instructions were very helpful:

https://www.eco-ebike.com/blogs/eco-cycles-instructionals

Another helpful YouTube video on how to flash the controller firmware with the hex file (near the end), this is how I did mine but I did purchase the already made cable from Eco-Ebikes:

https://youtu.be/S2SRKu6-Qyw

How to navigate the settings:

https://github.com/OpenSourceEBike/TSDZ2_wiki/wiki/Features-and-configurations-on-display

This was a little challenging for me but after a few evenings of brain scratching and internet search, it worked.

There is a lot of work behind this and am very grateful for everyone who contributed as well as endless sphere. Thank you everyone for all the help and inputs.