Manufactured by: EZ-Flash
This wiki pertains to the following unit:
EZ-Flash III for GBA/GBA SP 4 Gb (sticker) EZ395 2005.12 (reverse side of PCB)
According to the online retailer Flashlinker-Shop and one video review on youtube, the 4 Gb model differs from the 2 Gb, 1 Gb and 512 Mb models in that you need to use a different version of the software. Exactly which software version ought to be used is a contentious issue.
The EZ-Flash III consists of two components: a) EZ-Writer, which connects to a powered USB port on a PC running Windows. It will not work in a USB hub without mains power, or the front panel USB connector on your PC. It is the dock for the EZ-Cart. It has a bright LED and a port. b) EZ-Cart. This is the size of a regular GBA cart. It stores the ROMs and savegames. It is plugged into the EZ-Writer to add or remove data from the cart.
Important! The EZ-Cart must be charged for 8 hours prior to first use. The computer must be running and the EZ-Writer LED must be lit. A computer in standby mode is not sufficient.
There are four memory chips in the EZ-Cart: 4Gb NAND EZ-Disk, 128 Mb PSRAM Hidden, 256Mb Fast, 32Mb Boot.
When a .GBA file is selected in EZ-Disk, it is copied to Hidden, which takes a few seconds. This means only games up to 128 Mbits in size will load from EZ-Disk.
When a .GBA is selected on Fast, it will load immediately. Fast will store one game of the largest known size (256 Mb).
All regular saves are stored in the SAVER folder in EZ-Disk, but only when you turn the system back on. Instant saves (when they work) are also stored in the saver folder.
Boot holds the loader and menu. The menu is (supposedly) skinnable.