# RCM4200

**URL:** <https://forums.digi.com/t/rcm4200/9217>\
**Category:** Rabbit\
**Created:** [January 30, 2007, 9:35am UTC](https://forums.digi.com/t/rcm4200/9217 "2007-01-30T09:35:43Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![barni](https://avatars.discourse-cdn.com/v4/letter/b/9e8a1a/32.png) [@barni](https://forums.digi.com/u/barni)\
**Post date:** [January 30, 2007, 9:35am UTC](https://forums.digi.com/t/rcm4200/9217/1 "2007-01-30T09:35:43Z")

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How can I reprogram the flash-device of the RCM4200 while my program is running in fast ram?

Thanks Barni

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**Author:** ![bsprouse](https://avatars.discourse-cdn.com/v4/letter/b/ecd19e/32.png) [@bsprouse](https://forums.digi.com/u/bsprouse)\
**Post date:** [February 1, 2007, 1:13am UTC](https://forums.digi.com/t/rcm4200/9217/2 "2007-02-01T01:13:02Z")

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There are application download samples in the /Samples/Down\_Load directory that show writing to a 256KB program storage flash device. This would need some modification for the RCM4200 but should at least get you started. At this time there is no support for this outside of programming the functionality into the application.

Bill Sprouse  
Rabbit Semiconductor

[QUOTE=barni;16]How can I reprogram the flash-device of the RCM4200 while my program is running in fast ram?

Thanks Barni[/quote]