Continuing to use Static RAM in Galaksija Plus would have significantly increased the cost, so designers decided to switch to dynamic, built out of 4416 chips.
Larger memory prompted the need for faster cassette tape data recording rate, which was increased to 1200 bit/s by modifying another piece of firmware.
Some games for original Galaksija used to do a similar trick, albeit in a limited fashion due to restrictive memory capacity.
Additional firmware (ROM C) also featured Full Screen Source Editor and soft scrolling.
Galaksija Plus was manufactured by Institute for School Books and Teaching Aids for an announced price of 140,000 dinars.