Please help me about Cisco AP not working issue

[Faizi]

Hello everyone.

We have Cisco access points installed in our administration. Initially, we connected the access points to the Cisco switches, and then we connected the Cisco switch to the Mikrotech router. However, we are currently facing an issue where the access points only connect to mobile phones and allow sharing, but they do not work or connect to computers after a few minutes. Although they are physically connected to the computers, they do not function properly. Whenever we restart the access points, they work for a few minutes and then stop working again.

AP model: AIR-CAP3702l-A-K9

[Rich R]

I've already shared the link to the IOS above twice before ^^^^^

And you must have already downloaded it if you were installing it right? (because you said "When I was installing the firmware to AP")

[Faizi]

Thank you, a lot.

I appreciate you.

[Faizi]

Hello dear

I have tried to recover AP ROMMON using this method, but unfortunately it did not work. I kindly request your guidance and assistance.

Note: I used tftp32 unfortunately the same problem

I have shared screenshots

[Rich R]

It looks like you got to the beginning of step 5 (tftp_init) and then repeated that a few times even though you only need to enter that once (why?)

Did you continue with the rest of the steps to initiate the file transfer?

[Faizi]

I tried many ways and besides that, I got any information from Google, but I didn't find it.

[Rich R]

But you did not even follow the instructions provided and did not answer my question about why you never went past tftp_init in the steps!

I think you need to hire a Cisco networking specialist to do this for you as they will be able to understand and follow the instructions.
While they do it you can watch and take notes for the next time in case you want to try to do it yourself.

[Faizi]

Hi

When I install this IOS file: (ap3g2-k9w7-tar.153-3.JBB5) works but does not work without JBB like those (ap3g2-k9w7-tar.153-3.JPO),  (ap3g2-k9w8-tar.153-3.JPQ) when installed it after GUI no work.

What's the issue?

[Rich R]

Use whichever you are happiest with. 
There are known issues with the GUI which will never be fixed.
Cisco stopped development, testing and fixes on that years ago.

It would useful for you to use and understand the command line IOS config, then you won't need to use the GUI.
https://www.cisco.com/c/en/us/td/docs/wireless/access_point/15-3-3/configuration/guide/cg15-3-3.html