Clear the 5B00 error and resume printing.
The v3800 is a specific version of Canon’s proprietary service software. While newer versions like v4720 or v6210 exist for modern MegaTank models, v3800 is highly regarded for its compatibility with the printers from around 2013.
Releasing the Stop/Resume button while still holding Power, then pressing Stop/Resume a specific number of times (typically for newer models).
: Can sometimes be used to change the printer's regional configuration for ink cartridge compatibility. Supported Models