4gl 7.31 interrupt error

hello, i have Informx 4gl 7.31.UC3 and i have the known bug where interrupt only works once, i have searched on informix for download an update and i havent found one, i need to fix it, so i please, i need to know if its possible to fix, if not if its possible to download a previous version or a newer version to fix it(i know that 7.30 works well but i havent found where i could download) please, i need some place to download the update or the other one, i dont know how the updates work, where to look for and that soft of things, so please, help me find a patch o some way to make it work properly A lot of Thanks