UPDATE FAIL
LG TV & Audio · 55UQ7570PUJ 55" Class UQ75 Series 4K UHD Smart TV
Firmware update did not complete successfully. TV may revert to previous firmware, enter boot loop, or get stuck on loading screen. For OTA: ensure stable internet and retry. For USB: download firmware from lg.com/us/support, place .epk file in root of FAT32 USB drive. Do NOT unplug TV during firmware update — power loss can brick the main board.
Error UPDATE FAIL on the LG TV & Audio 55UQ7570PUJ 55" Class UQ75 Series 4K UHD Smart TV means: Firmware Update Failed. The top-ranked community fix is “Perform Firmware Recovery via Service Menu and Replace Main Board if Needed” (hard difficulty, ~90 min, DIY cost: $0-$20). 2 community-ranked fixes available below.
Published February 2026 · 2 fixes · tv
Content is based on manufacturer service documentation, community repair experience, and OEM technical bulletins. Always verify with your owner's manual.Learn about our editorial standards.
While many tv repairs can be done safely at home, consider hiring a qualified technician if:
Average professional repair cost for this issue: $300-$600.
tv · 2 fixes
tv · 2 fixes
tv · 2 fixes
tv · 2 fixes
tv · 2 fixes
tv · 2 fixes
App Freezes or Crashes
Audio Out of Sync with Video
Backlight Bleeding / Clouding
LED Backlight Strip Failure — No Picture
LED Backlight Strip Physical Failure
Horizontal or Vertical Banding
Power Supply Overcurrent / Short
Main Board Failure
The LG TV & Audio 55UQ7570PUJ 55" Class UQ75 Series 4K UHD Smart TV has 8 other known error codes:
Error code UPDATE FAIL also appears on 6 other LG TV & Audio models:
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