I have one Grandstream GWX4108 to tie over a few old analog lines from our old PBX to 3CX/VOIP. I updated the firmware on the GWX4108 a few days ago and since I have not been able to get any inbound calls on these lines. I call call out OK. On trhe #CX site I see a message that says you muts have version 188.8.131.52. of the grandstream firmware for it to work with 3cx. Unfortunately that is no longer downloadable on the grandstream site. I have opened a case and sent a gazillion message to grandstream, but they only sent me a corrupt verion of the file and any subsequent attempts at contact have not resulted in a reply. I have tried to search the internet for this firmware but can't find it. I have three questions: - Does anyone have this file and could post it for me? - Is 3cx going to come with updates that would allow us to use the latest Grandstream firmware? - IF 3CX is not releasing updates to keep up with the latest firmware, then could 3cx at least provide us with the particular firmware that 3cx will work with.