BG96 Reading available character remaining

Technical Subjects Software General Function
1

Hi, I try to read the number of byte available to read with the following command

AT+QSSLRECV=1,0

Most of the time, it is working great, it is returning the good amount or none when not available yet which is what I’m expecting.
+QSSLRECV: 633,0,633

but 1/10 of the time, it is returning a negative number
+QSSLRECV: 633,0,-633

I just don’t understand that and I don’t know how to manage it. Is somebody have an explanation and what could be done about it?

2

which version be used currently in your side?

it seem that it is a bug ,

pls reach to stephen.li@quectel.com for more support

3

I received no response to my issue following an email and problem still persist.

I used the module NL-SW-LTE-QBG96-B. Could it be a bug in new firmware? should I revert back to the previous one. I think I will give it a try.