Brother periodically releases updates to the printer's firmware which may cause aftermarket chips to stop working.
Click here to learn how to check your printer's firmware version.
In the event that your refillable cartridges with auto-reset chips are not able to be detected by the printer, you can still use them by installing the original chips from four brand-name Brother cartridges. This is easy to do.
Please refer to the following product instructions (PDF format):
Brother LC103 Standard-Size Refillable Cartridge Instructions with Original Chips
Brother LC103 Elongated Refillable Cartridge Instructions with Original Chips