4 gb sd card not formatting - Kodak EasyShare C663 Digital Camera

It sounds like the tablet is having trouble reading your 128 GB SD cards.
There are a few things you can try to troubleshoot this issue:

1. Check the SD card for any visible damage. If the card is physically damaged, it may not work correctly.
2. Make sure that the SD card is properly inserted into the SD card slot on the tablet. It should fit snugly and be fully inserted.
3. Check that the SD card is compatible with your tablet. Some tablets can only support SD cards up to a certain capacity or with a certain type of file system.
4. If the SD card was working fine before and has suddenly stopped working, it's possible that the card has become corrupt. In this case, you may need to format the card to fix the issue.
5. If none of these steps help, you may need to try a different SD card to see if the issue is with the tablet or the SD card.

This nearly always happens because an SD card is used that is FAR too BIG for the unit. 1 GB or LESS it says in the manual.

G Supported Memory Cards:
SD memory cards, optional CASIO song data cards*
G Supported SD Cards:
1 GB or less (Cards with capacity greater than 1 GB are
not supported.)
G Maximum Number of Importable Songs: Up to 1,000
• The actual number of songs that can be imported
depends on the size of each file. The actual number will
be less than 1,000 when individual song files are large.
G Supported Data:
SMF Format 0, CASIO Original Format CM2

Manual at the page 54 (E52).

https://www.manualslib.com/manual/26181/Casio-Lk-300tv.html?page=54

..

64GB and higher capacities need to be formatted with exFAT.
Some help: https://www.youtube.com/watch?v=JA9fp863d-o

A tool for formatting SD and micro SD cards is SD-formatter:
https://www.sdcard.org/downloads/formatter_4/

The phone can handle up to 32 Gb micro SD cards, so I think the format is not good. Try formatting the SD card in your phone, to make sure the format is what your phone can work with.
If you can't use the card, because the phone does not let you format is, try formatting it in a PC, using an external memory card reader. Us format FAT32.

Format it on a PC, and try again.

Try formatting the SD card before taking photos. Use the camera Menu and select format memory card.

The Z740 supports only MultiMediaCards & SD Memory Cards. 4GB and larger SD cards are usually SDHC (Secure Digital High Capacity) types - and bear the SDHC mark on the label. These cards are not compatible with this camera. Use only MMC and SD cards. SD cards are 2 GB and under - although *some* 4 GB cards are marked as SD too; these cards may or may not work. If you purchase a 4 GB SD (not SDHC) card, make sure that it can be returned if it doesn't work reliably in your camera.

According to the manufacturer specs, only the mmc and sd flash protocols are supported. The sd hc protocol is not supported. There are some 4 gb sd cards that were produced before the sd hc format was produced (starting at a 4 gb capacity). Try a few different manufacturers for the 4 gb sd card.

I had the same "error 31" problem when trying to format a 2 GB SD card. I then tried a 1 GB SD card and it worked fine. I wonder if the device only supports up to 1 GB cards?? I checked the user guide and it does not say one way or the other.