Recovering recordings from Sony IC Recorder ICD-B300?

Question

Data recovery

Good afternoon!
It so happened that a very important record was deleted on the voice recorder of a familiar Sony IC Recorder ICD-B300. The recorder is NOT connected to a computer, and you can write down the records only by listening to the recorder itself. Is it possible to restore the desired record?
I've been thinking - it's theoretically possible, isn't it? The specification says that the player uses 64MB of flash memory.
Therefore, I think that you need to try:
1. Get hooked on the player
2. Find out the type of file system
3. If the file system allows, then restore the file at the physical level.
But how to do all these three steps? What are the tips for restoring the record?
PS It will be a shame, because it was a 4-hour (!) interview with some famous person from Kyiv. It is hardly possible to repeat such a conversation…
Thank you.

Answer 1

Open, unsolder, connect to PC. Most likely there is ext2 or FAT, and the file peacefully "lies" on the flash drive.
I'm not a soldering expert, so I won't tell you the details. Good luck to you.