My Roku Ultra powers on but doesn't move past the animated "Roku" page. I've done a total reset several times. During one reset, I also reset my cable modem. No change in my Roku device -- still can't move beyond the "Roku" animation, never arrive at the home page. What else can I do? Device SN is YJ006J850708. Thank you
Does your Ultra have an SD memory card installed? A corrupted card can have the effect you described. Removing the SD card may allow your Roku to complete its login.
Try formatting the card in your computer, if it has a card reader that can handle SD cards. After formatting, see if the Roku will detect and reformat the card successfully.
Also, see if this post helps: https://community.roku.com/t5/Remotes-Accessories/Added-SD-Card-Remote-no-longer-works/m-p/646676#M1...
Windows instructions, don't know what would differ on other systems: Do a slow (i.e. not "fast") format of the card via your computer. Select FAT32 and select it to use the default allocation size.