If you want to keep the familiar look of your device but improve the internals, several community members release "Cleaned Stock" images.
TriForceX/MiyooCFW: Custom firmware source code ... - GitHub fc3000 custom firmware
Firmware for the V1 will often result in a "black screen" on a V2 device, and vice versa. Always check the developer notes for compatibility. Top Custom Firmware Options 1. The "Family Pocket" CFW (OpenDingux Fork) If you want to keep the familiar look
After flashing, insert the SD card into the FC3000 and power on. You will see a black screen with white text for about 45 seconds. This is the expansion script—it resizes the ROMS partition to use the rest of your SD card. The device will automatically reboot. fc3000 custom firmware