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diy solar

Unable to update JK BMS....

sticilface

New Member
Joined
Jan 29, 2025
Messages
6
Location
Scotland
I can connect to the BMS using the USB to RS485 and connect o the BMS.
I have PB2A16S20P, V15 as shown in the bottom image which is taken from the mobile app. as you can see from the upload message I do have the right firmware...
I can attempt to force it.. but equally I do not wish to brick my BMSs...
BMS update fail.jpgupdate - showing correct device.PNG
 
So I cannot open again... and I've no idea why... especially given I managed once. I'm going to suspect it is because im using wine on a mac... but I got it working last time but not this time.

I've set the address to 1, rebooted and confirmed the address is 1 in the bluetooth app...
using the far right 2 RJ45 (or any of the others) it doesn't open when I connect.

Rather frustrating. Anyone else have issue with wine..

btw... I get the serial to work fine with the VEConfigure, so I can pass serial through easily enough.
 
You can't use the phone app and the rj45 at the same time, turn off and then on again but then only use the pc windows app.
 
Updated


RS485-2 , black is to PC and yellow is connection to the other batteries.

Whatever you did in post one should work again if the dip switch is set to one and not zero.
 

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Last edited:
Figured it out... was a swiss cheese of misconfig...

Needed to set UART1 to JKBMS... alongside the address... rebooting to make it take effect...
Packs both now updated.
Thank you for the help
 

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