What are the differences between the various builds of the Acekard 2s?
The AK2 eventually suffered from a manufacturers soldering error. This problem caused the later batches of the Green PCB AK2 to experience a FAT issue. The cards would stop working some time between 2 weeks and 8 months, depending on usage. These AK2s were pulled from circulation and fixed, relabeled, and released as a fixed AK2 and later as the first batch of AK2.1s. These fixed 2.1, Green PCB Acekards, have a small chip under the sticker and a windowed shell. They are essentially the AK2 repaired, which means the internals are the same. The kits were later redesigned and re-released as the AK2.1 Black PCB. The Black PCB contained a new controller chip and featured a permanent redesign of the PCB which insured that the FAT error would not happen again. The Black PCB AK2.1 was offered in a new package design, a box, and sold with or without the AK microSD reader. This version of the Acekard 2.1 was later issued with a darker Forest Green PCB. The kit then went back into development and
