# Problems changing offset in fwup

**URL:** <https://forum.elixirforum.com/t/problems-changing-offset-in-fwup/67209>\
**Category:** Questions\
**Tags:** nerves, nerves-system\
**Created:** [November 3, 2024, 3:09pm UTC](https://forum.elixirforum.com/t/problems-changing-offset-in-fwup/67209 "2024-11-03T15:09:07Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![joserp93](https://forum.elixirforum.com/user_avatar/forum.elixirforum.com/joserp93/32/28659_2.png) [@joserp93](https://forum.elixirforum.com/u/joserp93)\
**Post date:** [November 3, 2024, 3:09pm UTC](https://forum.elixirforum.com/t/problems-changing-offset-in-fwup/67209/1 "2024-11-03T15:09:07Z")

</div>

Hi everyone, I have some questions about fwup. I have a production device, and I want to do an update, but in the update I had to modify the ROOTFS\_A\_PART\_COUNT , increasing it because of new libs and packages. Because it affects APP\_PART\_OFFSET in effect.  
Now testing locally, the user part is formatted from scratch, so the device loses the wifi settings (saved using vintage\_net\_wizard on site), among others.  
So I don’t want to do an update and have the device remotely be disconnected. What do you recommend to fix this or some other alternative? I will be grateful for the help.