# where can I find a Dynamic C installer for 10.21? **URL:** \ **Category:** Rabbit\ **Tags:** dynamic-c, rabbit\ **Created:** [July 7, 2022, 12:56pm UTC](https://forums.digi.com/t/where-can-i-find-a-dynamic-c-installer-for-10-21/23146 "2022-07-07T12:56:30Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![mmcfaul](https://avatars.discourse-cdn.com/v4/letter/m/48db29/32.png) [@mmcfaul](https://forums.digi.com/u/mmcfaul)\ **Post date:** [July 7, 2022, 12:56pm UTC](https://forums.digi.com/t/where-can-i-find-a-dynamic-c-installer-for-10-21/23146/1 "2022-07-07T12:56:30Z")
We have purchased intellectual property from another company. They were using Dynamic C 10.21 to program the ID block in their Rabbit 4000 series devices. The latest version of Dynamic C does not work. Management has told us to make it work “as is”, so we have no cycles to bring the code up to the current Dynamic C version (10.72E). ---
**Author:** ![Campbell](https://avatars.discourse-cdn.com/v4/letter/c/97f17d/32.png) [@Campbell](https://forums.digi.com/u/Campbell)\ **Post date:** [July 7, 2022, 1:03pm UTC](https://forums.digi.com/t/where-can-i-find-a-dynamic-c-installer-for-10-21/23146/2 "2022-07-07T13:03:55Z")
Contact Digi Technical support and they can send you the zip. Dynamic C 10.72E has the write\_ID program in the /utilities folder. You can also download other version of the Write\_ID program from this link; [https://hub.digi.com/support/products/dynamic-c/](https://hub.digi.com/support/products/dynamic-c/) ---
**Author:** ![Comarongurgaon](https://avatars.discourse-cdn.com/v4/letter/c/f07891/32.png) [@Comarongurgaon](https://forums.digi.com/u/Comarongurgaon)\ **Post date:** [July 11, 2022, 11:44am UTC](https://forums.digi.com/t/where-can-i-find-a-dynamic-c-installer-for-10-21/23146/3 "2022-07-11T11:44:09Z")
Thank you. It will help me alot.