Question "Get Boot Info" fails during firmware update on a Lifepower4 v1

When you are updating the firmware do you have the communication cables disconnected on both batteries?

I'm having the same issue, I have 3 V1 EG4 LifePower4 batteries and I am unable to successfully run "Get Boot Information" on any of them.

There are no other communication cables connected, and no power cables connected.

I have not attempted to update the firmware yet because I'm trying to determine which firmware file to use first by clicking "Get Boot Information" however it fails every time with "get boot information failed"

Yeah there is nothing connected to the battery terminals at all.

I was able to figure this out though.

I have two of the USB Read/Write cables, one of them I was able to connect to the battery and read data using the BMS_Test software without issue, the other I was not.

Both of them failed to get boot information with "get boot information failed" no matter how many times I tried.

I looked a little closer at these cables and you can see through the RJ45 Connector and the one that was working for me to read data had the green and white wires connected to pins 7 and 8 of the connector.

The one that wasn't working for anything had the wires connected to pins 1 and 2 of the connector.

Looking closer at the documentation, it says for BMS update you need pin 1 connected to B of the rs485 adapter and pin 2 connected to A. Taking a closer look at the one cable I have which is wired to pins 1 and 2 I could see that it was incorrectly connected to the adapter with A/B swapped.

So swapping the wires such that A goes to pin 2 and B goes to pin 1 I was successfully able to "Get Boot Info" and was also successful in updating the firmware.

TL;DR Check your cables, I received two cables with my batteries from signature solar which had completely different pinouts (one was wired to pins 1 and 2, the other to pins 7 and 8) and the cable wired to pins 1 and 2 was wired backwards.....  you can read data from the batteries on pins 7 and 8 but you can't get boot info or update the firmware, this can only be done on pins 1 and 2 and the A/B rs485 wiring needs to be correct.