# About Flint WiFi Speed **URL:** \ **Category:** Router\ **Created:** [December 2, 2022, 9:57am UTC](https://forum.gl-inet.com/t/about-flint-wifi-speed/25551 "2022-12-02T09:57:35Z")\ **Posts on this page:** 14\ **Page:** 1
**Author:** ![zxc\_TW](https://forum-assets.gl-inet.com/letter_avatar_proxy/v4/letter/z/c4cdca/32.png) [@zxc\_TW](https://forum.gl-inet.com/u/zxc_TW)\ **Post date:** [December 2, 2022, 9:57am UTC](https://forum.gl-inet.com/t/about-flint-wifi-speed/25551/1 "2022-12-02T09:57:35Z")
I bought Flint. But the download speed of 5G WiFi is less than 300Mbps (using 500/250) , 2.4G Wifi is even worse, only less than 100Mbps. What should I do? (Using v4.1.0 Release 6) ---
**Author:** ![Dipin](https://forum-assets.gl-inet.com/letter_avatar_proxy/v4/letter/d/e68b1a/32.png) [@Dipin](https://forum.gl-inet.com/u/Dipin)\ **Post date:** [December 2, 2022, 12:02pm UTC](https://forum.gl-inet.com/t/about-flint-wifi-speed/25551/2 "2022-12-02T12:02:27Z")
Hi,How did you upgrade to SDK4.1? Uboot or WEB page? Is it possible to upgrade the firmware to SDK4.1 in this way and then retest the wifi speed? [Slow wifi on Flint AX1800 - #31 by subzero06](https://forum.gl-inet.com/t/slow-wifi-on-flint-ax1800/25409/31) ---
**Author:** ![zxc\_TW](https://forum-assets.gl-inet.com/letter_avatar_proxy/v4/letter/z/c4cdca/32.png) [@zxc\_TW](https://forum.gl-inet.com/u/zxc_TW)\ **Post date:** [December 2, 2022, 12:09pm UTC](https://forum.gl-inet.com/t/about-flint-wifi-speed/25551/3 "2022-12-02T12:09:25Z")
I upgraded Flint from 3.214 to 4.1.0 through the web. ---
**Author:** ![zxc\_TW](https://forum-assets.gl-inet.com/letter_avatar_proxy/v4/letter/z/c4cdca/32.png) [@zxc\_TW](https://forum.gl-inet.com/u/zxc_TW)\ **Post date:** [December 2, 2022, 3:34pm UTC](https://forum.gl-inet.com/t/about-flint-wifi-speed/25551/4 "2022-12-02T15:34:03Z")
I have just used uBoot to re-flash the firmware. After flashing, I turned off the power of Flint, but it cannot be turned on again. What should I do? ---
**Author:** ![hansome](https://forum-assets.gl-inet.com/letter_avatar_proxy/v4/letter/h/b5ac83/32.png) [@hansome](https://forum.gl-inet.com/u/hansome)\ **Post date:** [December 2, 2022, 5:19pm UTC](https://forum.gl-inet.com/t/about-flint-wifi-speed/25551/5 "2022-12-02T17:19:37Z")
Hi, does the led light on? ---
**Author:** ![hansome](https://forum-assets.gl-inet.com/letter_avatar_proxy/v4/letter/h/b5ac83/32.png) [@hansome](https://forum.gl-inet.com/u/hansome)\ **Post date:** [December 2, 2022, 5:22pm UTC](https://forum.gl-inet.com/t/about-flint-wifi-speed/25551/6 "2022-12-02T17:22:03Z")
Could you export log for review? ![image](https://forum-static.gl-inet.com/original/2X/9/945990503d88a8941d1f95cbbd079499bf71ed15.png) ---
**Author:** ![zxc\_TW](https://forum-assets.gl-inet.com/letter_avatar_proxy/v4/letter/z/c4cdca/32.png) [@zxc\_TW](https://forum.gl-inet.com/u/zxc_TW)\ **Post date:** [December 2, 2022, 5:41pm UTC](https://forum.gl-inet.com/t/about-flint-wifi-speed/25551/7 "2022-12-02T17:41:05Z")
After powering on, Flint does not respond ---
**Author:** ![alzhao](https://forum-assets.gl-inet.com/letter_avatar_proxy/v4/letter/a/5f9b8f/32.png) [@alzhao](https://forum.gl-inet.com/u/alzhao)\ **Post date:** [December 3, 2022, 5:40am UTC](https://forum.gl-inet.com/t/about-flint-wifi-speed/25551/8 "2022-12-03T05:40:55Z")
Which firmware did you use in uboot? You should use the .img firmware ---
**Author:** ![zxc\_TW](https://forum-assets.gl-inet.com/letter_avatar_proxy/v4/letter/z/c4cdca/32.png) [@zxc\_TW](https://forum.gl-inet.com/u/zxc_TW)\ **Post date:** [December 3, 2022, 6:06am UTC](https://forum.gl-inet.com/t/about-flint-wifi-speed/25551/9 "2022-12-03T06:06:29Z")
I made sure to use the .img file for Flash. After flashing, I felt that the previous Config was not completely cleared, so I decided to flash back to version 3.214 before upgrading. When I cut off the power, it won’t turn on. ---
**Author:** ![alzhao](https://forum-assets.gl-inet.com/letter_avatar_proxy/v4/letter/a/5f9b8f/32.png) [@alzhao](https://forum.gl-inet.com/u/alzhao)\ **Post date:** [December 3, 2022, 6:42am UTC](https://forum.gl-inet.com/t/about-flint-wifi-speed/25551/10 "2022-12-03T06:42:32Z")
If uboot is still accessible pls try flash again. ---
**Author:** ![zxc\_TW](https://forum-assets.gl-inet.com/letter_avatar_proxy/v4/letter/z/c4cdca/32.png) [@zxc\_TW](https://forum.gl-inet.com/u/zxc_TW)\ **Post date:** [December 3, 2022, 7:12am UTC](https://forum.gl-inet.com/t/about-flint-wifi-speed/25551/11 "2022-12-03T07:12:49Z")
To be correct, Flint does not respond when plugged in. ---
**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 4, 2022, 3:33am UTC](https://forum.gl-inet.com/t/about-flint-wifi-speed/25551/12 "2022-12-04T03:33:16Z")
sounds like the hardware went bad - can you try replacing it for a new one? ---
**Author:** ![zxc\_TW](https://forum-assets.gl-inet.com/letter_avatar_proxy/v4/letter/z/c4cdca/32.png) [@zxc\_TW](https://forum.gl-inet.com/u/zxc_TW)\ **Post date:** [December 4, 2022, 11:41am UTC](https://forum.gl-inet.com/t/about-flint-wifi-speed/25551/13 "2022-12-04T11:41:48Z")
I used VOM yesterday to determine whether the Adapter is damaged. The result seems to be that the Adapter is damaged. So I will use another normal Adapter to determine whether there is a problem with Flint. ---
**Author:** ![bruce](https://forum-assets.gl-inet.com/user_avatar/forum.gl-inet.com/bruce/32/35649_2.png) [@bruce](https://forum.gl-inet.com/u/bruce)\ **Post date:** [October 29, 2025, 4:19am UTC](https://forum.gl-inet.com/t/about-flint-wifi-speed/25551/14 "2025-10-29T04:19:44Z")