# Slow wifi on Flint AX1800

**URL:** <https://forum.gl-inet.com/t/slow-wifi-on-flint-ax1800/25409>\
**Category:** Router\
**Created:** [November 28, 2022, 4:17am UTC](https://forum.gl-inet.com/t/slow-wifi-on-flint-ax1800/25409 "2022-11-28T04:17:05Z")\
**Posts on this page:** 1\
**Showing post:** 31

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**Author:** ![subzero06](https://forum-assets.gl-inet.com/letter_avatar_proxy/v4/letter/s/94ad74/32.png) [@subzero06](https://forum.gl-inet.com/u/subzero06)\
**Post date:** [December 1, 2022, 2:57am UTC](https://forum.gl-inet.com/t/slow-wifi-on-flint-ax1800/25409/31 "2022-12-01T02:57:54Z")

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I received a replacement router (same flint) from amazon  
This time i upgrade to version 4.x using “uboot” from this guide:

> **[Debrick via Uboot - GL.iNet Docs](https://docs.gl-inet.com/en/4/tutorials/debrick/)**
>
> Documentation for GL.iNet Productions

For some reason the router was flashing blue for like 1 hour and wouldn’t stop - so i just unplugged and plugged it back in to see if it actually upgrade…and it did.

This time, my wifi is back to normal speeds! im guessing the best way to upgrade from 3.x to 4.x is with Uboot and not via the control panel.

check my wifi speed now: (this is is latest firmware 4.x)

 ![Screenshot 2022-11-30 at 9.57.13 PM](https://forum-static.gl-inet.com/original/2X/4/48330d4735730610cfeb8bd07e76755b108934ed.jpeg)

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