Nintendo has successfully ended a long campaign to get the R4 chip banned in the U.K.

At London’s High Court yesterday, the R4 cartridge, which allows users to use Homebrew software and play illegally downloaded Nintendo DS games, was ruled as illegal. Last night, R4 retailers went into over-drive to sell their stock of R4 chips by cutting the price substantially before the ruling came into play at 8am this morning.

Defendant Playables Ltd. claimed that the chip was legal as it allows the play of homebrew applications, but the court ruled that R4 circumvents the DS security system and is therefore illegal.

The R4 chip, which is said to have cost Nintendo millions of pounds of lost revenue from game sales, can no longer be imported, sold or advertised in the U.K.