Hewlett Packard (HP) is once again causing its printer customers angst, as it is found a new firmware update locks out the use of third-party ink. The news comes just days after HP’s Instant Ink subscription service was called into question as being sketchy.

Earlier this week, it was reported that if you sign up for HP’s Instant Ink service

Source: Hot Hardware – HP Blocks Third-Party Printer Ink With New Firmware In A Typical Money-Grab