Did you update with Keep settings enabled?
If not, could you update to 7.03.4 without keeping configuration, to have a fresh update and see if the issue is still present.
If mobile utilities do not work even after a clean device reset, I would like you to attach a troubleshoot file to your question. Please, replicate the issue, then access router's WebUI, go to System -> Administration -> Troubleshoot section and download troubleshoot file from there. The logs in the file will allow to investigate the issue further.