# Sparkpool Grin withdraw to Niffler

**URL:** https://forum.grin.mw/t/sparkpool-grin-withdraw-to-niffler/7965
**Category:** Tech Support
**Created:** [November 18, 2020, 3:16pm UTC](https://forum.grin.mw/t/sparkpool-grin-withdraw-to-niffler/7965 "2020-11-18T15:16:11Z")
**Posts on this page:** 1
**Showing post:** 3

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### Author: ![Paouky](https://yyz2.discourse-cdn.com/flex036/user_avatar/forum.grin.mw/paouky/32/513_2.png) [@Paouky](https://forum.grin.mw/u/Paouky)
#### Post date: [November 19, 2020, 9:25am UTC](https://forum.grin.mw/t/sparkpool-grin-withdraw-to-niffler/7965/3 "2020-11-19T09:25:07Z")

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Download _grin-wallet_ and enter `grin-wallet receive -i $PATH/file.json` to receive a json transaction file.

Then, have a look at this thread so you can return them valid a json file.

> [@How to convert slatepack response to old response file?](https://forum.grin.mw/t/how-to-convert-slatepack-response-to-old-response-file/7968):
>
> I received a .json file from Sparkpool and using grin-wallet v4.0.0 receive to process this file, and it output a slatepack file. But Sparkpool may require the old format response file. How can I get the old format response file using grin-wallet? Thanks!

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