As I recall, the home page only displays a large "BMS NOT COMMUNICATING" message.  I'm away from my boat for a few hours.  I'll verify when I return.

Try setting the bitrate to 115k2 if you do not get it.

Do you get the BMS to communicatre to WiFi? Home page data?  

There appears to be no communication between the BMS and WIFI module.  On the firmware page I enter my unit serial number (1A-1720) to unlock communications.  I get an "incorrect password...

@Richard can you share which boatloader you have used. I didn't own one at the moment, but like to added to my toolkit.

No, The bootloader only writes to the application side of the flash On the Home screen you get data? What is the BMS serial written there? Or you do not get the ABMS and WiFi to communiate at all?...

My Wifi module, BMS, and Cerbo are all powered from the battery side of the contactor.  They always have power. I will try setting the Wifi module RS485 speed to 56k and 115k. When I attempt...

Was the Wifi on the system or battery side? If on system then the BMS turns off the contactor when powered ON/OFF.  Try address 2 for 56k and 115k2 in Firmware settings. Manual instruction RS...

There have been quite a few advancements in LFP battery charging since firmware 2.9.3 but REC does not always share the details of the new features

We really need Tines input here. @Tine Andrejasic 

Rick, you deserve the support admin of the year award for responding from North America at this hour!Thanks, but no luck with 1A-0000.  I also tried a whole bunch of 7 character strings: ...

@Richard I did not sadly. I was given the firmware by @tine from REC but could never get it to flash. OGM RMAed the BMS. I would reach out to OGM if you bought it through them. 

Try 4 zeroes after the dash  

@o-firstname I recently flashed my ABMS and can't proceed to loading firmware from my Wifi module.  It seems like the device serial number no longer acts as the password to unlock BMS communic...

@Rick I obtained an AVR programmer here in NZ and it was quick work to load the .hex and .eep files from @tine  I've run into a problem unlocking the serial communication between my Wifi modul...

Thanks rick Are you saying that it does not work with my 2.9.3 firmware bu t does with any newer firmware?   Tom

REC and victron have been working closely over this past year and updates are being released to take advantage of these emerging complementary technologies with more data being shared, more alarmin...

it charges and then goes into absorption mode, never goes to float.  what setting do i have not set right?   tom

@tom i would hold off for now as 2.9.5 should be available in a month or so. New features include better tip end charging and balancing cells indication on the wifi

rick,  do i need to go to 2.9.4 firmware?   what do i gain from changing to the ve can port?   everything seems to be working just fine the way it is

@Trevor sending Tine a followup email now 

Yes,  Change CANF paramter to 250k Set cerbo port as per quickstart manual link above Move to VE.CAN port Wakespeed now goes the VE. CAN port as well and don't forget to change its CAN speed

ok,  i have the rec active cable plugged into the bms can port on the cerbo gx.  are you guys saying i should have it plugged into the ve can port?    i have dvcc on in the curr...

@Rick Just tested them all 5 minutes ago and they are good :( Was really hoping for an easy fix there

For the Active BMS you will need to grab an M10 driver and remove the screws on the case and slide out the PCB.  The fuses are small black squares, likely with a blob of silicone on them. ...

@Ben Morning Ben, I'm looking through the manual now but do not see where the internal fuse or cell balancing fuse are located, could you point me in the right direction? I didnt see one when I had...

I mentioned this earlier in this thread but here it is again. The BMS port is only for "read only" type BMS systems that do not fully integrate with Victron VE DVCC and other high level integrated...

@Richard I just read a few manuals that I stored on my HD also one from 2021.  They all show the info you mention. Maybe you referred to my post, that I removed because it was wrong informati...

@Ben Read The Fine Manual is always good advice!  I re-read the Ver. 2.94 ABMS manual.  Regarding setup of the CAN port on the Victron GX device, it states:  "Use BMS-Can port w...

@Trevor did you have checked the internal fuses?  

@Rick and @Ben thank you very much for the advice on the BMS-CAN versus VE-CAN ports on the Cerbo.  I remember agonizing over the choice between the two 3 years ago.  Lacking guidance fr...

@tine Tine, do you have any thoughts on this one please.  Rick

@Trevor 

Alright guys: Just reformatted the Wifi module SD card and loaded up 2.95. I reset the internal clock battery on the Rec ABMS. Got it all put back together again and did the firmware update to 2.95...

The BMS port is only for BMS systems that do not fully integrate with Victron VE DVCC and other high level integrated control.

Ben makes a good point here.  The files first gets uploaded to the wifi module SDC card quickly,  then slowly to the wifi module.  Turning it off mid process will very likely corrupt...

@Ben At Richard, all system I made for customers all are set up with 250kB to VE-can port.   Iam not sure or bms-CAN on Cerbo is fully supported. 

@Richard As tip for every one that do any firmware upgrade or downgrade. after starting the process, The first meassge you see, is "uploaded succesfully"  Process is not yet finisched. Thi...

It sounds like your bootloader may have become corrupted.  If you are handy and have a USB AVR programmer you may be able to reload it. No guarantees but it might be worth a try. Please emai...

My system has been working flawlessly for 3 years except for the Wifi module.  For some reason, it will only function in Station mode.  When I scan for networks, nothing happens.  I'...