# Niffler, An out-of-the-box open sourced Grin GUI Wallet

**URL:** <https://forum.grin.mw/t/niffler-an-out-of-the-box-open-sourced-grin-gui-wallet/4760>\
**Category:** Development and Technical Discussion\
**Created:** [April 8, 2019, 1:36am UTC](https://forum.grin.mw/t/niffler-an-out-of-the-box-open-sourced-grin-gui-wallet/4760 "2019-04-08T01:36:02Z")\
**Posts on this page:** 1\
**Showing post:** 62

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**Author:** ![FirsArgentum](https://yyz2.discourse-cdn.com/flex036/user_avatar/forum.grin.mw/firsargentum/32/736_2.png) [@FirsArgentum](https://forum.grin.mw/u/FirsArgentum)\
**Post date:** [June 26, 2019, 9:32pm UTC](https://forum.grin.mw/t/niffler-an-out-of-the-box-open-sourced-grin-gui-wallet/4760/62 "2019-06-26T21:32:29Z")

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At the moment, it seems that you can withdraw Grin from Poloniex to Niffler wallet but not go in the other direction i.e. not send Grin from Niffler to Poloniex. Some said Polo. have not updated to latest Grin version. Hopefully they will after fork. See this thread for more details:

> [@Deposit to Poloniex](https://forum.grin.mw/t/deposit-to-poloniex/5253):
>
> I tested to deposit GRIN to Poloniex but got following message, do you have idea? Wallet command failed: LibWallet Error: Can't Deserialize slate I tried both " and ’ for the URL but same error. Thanks.

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