Unable to change admin/root pwd

BIGpipe unknown modification error: 01070733:3: Incorrect password or you may not change your password yet. Failed to change user's password. Exiting.

can you check if auth source is identical in bigpipe and configuration file (bigip_sys.conf)? if not, can you try to force mcpd to reload the configuration?

sol13030: Forcing the mcpd process to reload the BIG-IP configuration

[root@ve10:Active] config  b system list
system {
   auth source type local
   gui setup disable
   hostname "ve10.acme.com"
   mgmt dhcp disable
}