# \[WP7605\]\[SW\] Could not show printf()

**URL:** <https://forum.legato.io/t/wp7605-sw-could-not-show-printf/5434>\
**Category:** Legato Application Framework\
**Created:** [October 2, 2020, 7:31am UTC](https://forum.legato.io/t/wp7605-sw-could-not-show-printf/5434 "2020-10-02T07:31:34Z")\
**Posts on this page:** 1\
**Showing post:** 17

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**Author:** ![jyijyi](https://sea1.discourse-cdn.com/flex019/user_avatar/forum.legato.io/jyijyi/32/822_2.png) [@jyijyi](https://forum.legato.io/u/jyijyi)\
**Post date:** [October 5, 2020, 8:16am UTC](https://forum.legato.io/t/wp7605-sw-could-not-show-printf/5434/17 "2020-10-05T08:16:23Z")

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Please see here, espeacially on step 3( for your case, you need to click “Create” instead of “Duplicate”):

> [@Adding newest version Legato Framework into Developer Studio](https://forum.legato.io/t/adding-newest-version-legato-framework-into-developer-studio/2654/2):
>
> Hi @lichen First of all, to explain why the latest Legato version available in DS for WP85/WP75 is still 16.10.3, please have a look at the release information for the Legato Framework: [http://legato.io/legato-docs/latest/aboutReleaseInfo.html#releaseInfo\_LegatoAFReleases](http://legato.io/legato-docs/latest/aboutReleaseInfo.html#releaseInfo_LegatoAFReleases) To summarize: DS proposes by default only the packages matching with products official releases, for each supported module. The last release for WP85/75 is still Release 14, embedding Legato 16.10.3 In the meantime, the Leg…

you’ll need to select both the new **Toolchain** _and_ the **Application Framework** in the Package selection tabs.

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