# Existing FSB4 -\> FSB5

**URL:** <https://qa.fmod.com/t/existing-fsb4-fsb5/22972>\
**Category:** FMOD Engine\
**Tags:** fsbank-tool\
**Created:** [May 24, 2025, 1:08am UTC](https://qa.fmod.com/t/existing-fsb4-fsb5/22972 "2025-05-24T01:08:22Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Mystic04](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/mystic04/32/8575_2.png) [@Mystic04](https://qa.fmod.com/u/Mystic04)\
**Post date:** [May 24, 2025, 1:08am UTC](https://qa.fmod.com/t/existing-fsb4-fsb5/22972/1 "2025-05-24T01:08:22Z")

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Hey is there a way to maintain GCADPCM format but convert the FSB4 to an FSB5?

Ive tried using fsbankcl but get this error.

Allowing FSB source files  
Gathering files…  
Analysing files…  
ERROR: invalid file: ‘0xe1953544.fsb’  
skipped: ‘0xe1953544.fsb’ not a valid sound file  
An error occurred while populating soundbank

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**Author:** ![Andrew](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/andrew/32/261_2.png) [@Andrew](https://qa.fmod.com/u/Andrew)\
**Post date:** [May 25, 2025, 10:49pm UTC](https://qa.fmod.com/t/existing-fsb4-fsb5/22972/2 "2025-05-25T22:49:32Z")

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GCADPCM is a proprietary Nintendo format so you need to be a registered Nintendo developer to work with it.