Hi @David-TP 

I just purchased a deco S7 V1 (US VERSION) with the firmware:
1.4.1 Build 20230324 Rel. 50892

Then upgraded it to 1.5.2 Build 20240927 Rel. 68997 via the Deco app. However, right after all devices (3 phones 1 pc), the upload speeds dropped sharply, 60% on desktop and almost 90% on mobile phones. 

I have a symmetric internet bandwidth of 110mbps, but the phone gets a maximum of 20 upload and pc gets 50/60mbps. 

Before the upgrade everything was fantasic, and I was getting more than my allocated bandwidth speeds on the speed test results. So it's definitely the firmware. 

I saw others are making the same complain on the forums about the upgrade. You recommended someone to download the old firmware via a link but the old firmware is not there.

Can you please share the file so I can downgrade. I spent quite a lot of money buying this router and this is not working for me.

https://www.tp-link.com/en/support/download/deco-s7/v1/