I can't make Sprint 598 3G usb data card to work when 411U boots up. It will only work when I disconnect and reconnect and than it recognize my usb device but I can't make this card to work in cold boot. I have increase my boot-delay time to 9s but no difference. Appreciate any support. Thanks Nick.

Please contact MikroTik support (support@mikrotik.com) with attached support output file (from v5.22).

I did please check your email.

Which firmware version does the 598U show? e.g. I looked at a 598U which works fine in an RB411U (inc. cold starts) and it showed:

Model: T598 Rev 1.0 (2)
Revision: p2505002

These are visible in Info - the firmware revision is right at the start of the long "Revision" string.