Nintendo president Satoru Iwata has apologised to early Wii U adopters for the system's initial firmware update and the unavailability of some features at launch.
The exec told IGN he was sympathetic to users experiencing firmware download issues and regretted there being restrictions on console features.
"Personally I think that users should be able to use all the functions of a console video game machine as soon as they open the box," said Iwata.
"So I feel very sorry for the fact that purchasers of Wii U have to experience a network update which takes such a long time, and that there are the services which were not available at the hardware's launch."
Nintendo's latest console was released in the US last week. Forumites and Twitter users quickly reported they were being forced to download a 1GB update before certain features could be accessed. Some users reported waits of up to four hours, while slow downloads gave others the impression that their console had frozen. In a small number of cases users rebooted the Wii U during the procedure, reportedly bricking the console and rendering it useless.