# Insufficient storage space with upgrade 4.9

**URL:** <https://forum.ewelink.cc/t/insufficient-storage-space-with-upgrade-4-9/209261>\
**Category:** NSPanel Pro\
**Created:** [September 25, 2026, 11:01am UTC](https://forum.ewelink.cc/t/insufficient-storage-space-with-upgrade-4-9/209261 "2026-09-25T11:01:00Z")\
**Posts on this page:** 1\
**Showing post:** 15

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**Author:** ![Milk](https://dub1.discourse-cdn.com/flex005/user_avatar/forum.ewelink.cc/milk/32/8679_2.png) [@Milk](https://forum.ewelink.cc/u/Milk)\
**Post date:** [October 12, 2026, 9:00am UTC](https://forum.ewelink.cc/t/insufficient-storage-space-with-upgrade-4-9/209261/15 "2026-10-12T09:00:34Z")

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Hi, have you already downloaded **Fossify File Manager**? If not, you can refer to the instructions here.

> [@NSPanel Pro V4.0.12 impossible to complete update](https://forum.ewelink.cc/t/nspanel-pro-v4-0-12-impossible-to-complete-update/206373/3):
>
> Hi, sorry for the issue. There is a bug in previous and current v4.0.x firmware which doesn’t delete used OTA files. So after several update, these unnecessary OTA files have occupied a large amount of storage space. You can follow the steps below to clear these OTA files. As a side effect, you will need to reconfigure your NSPanel Pro after that. Note: Reconfigure only involves Language Setting, Country Setting, Custom Wallpaper, Custom Ringtone. Zigbee network, Wi-Fi etc., remain intact. …

If you’ve already installed it, you can check how much storage space each folder is using. You can also send me screenshots, and I can help confirm which files or folders can be safely deleted.

If you’re not sure how to check the storage usage, you can send me the device ID separately. I’ll try to look into the relevant information and confirm which content can be removed.

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