This usually indicates your 3DS system's TWL_FIRM partition is corrupted or broken.
Ensure your CIA file is not corrupted and that you have enough space on your SD card. flipnote studio dsi cia work
The original version features the iconic grid interface, classic sound effects, and the distinct charming aesthetic of the DSi menu. This usually indicates your 3DS system's TWL_FIRM partition
Information Regarding the End of the Flipnote Hatena Service classic sound effects
You can also incorporate real-world photos into your posts by using the Camera Tool
Because Flipnote Studio is an original DSiWare title, running it on a 3DS occasionally triggers legacy compatibility bugs. Here are the fixes for the most common errors. The Black Screen Freeze