thread Re: Contactless reader update issue in Hardware Setup & Troubleshooting

Contactless reader update issue

Peg23 — Sun, 21 Sep 2025 12:11:55 GMT

My phone connects to my contactless and chip readers however then it starts to update the reader. It gets to 99%, then briefly says connected, then immediately restarts the update and says the reader won't connect. I've tried uninstall-reinstalling the Square app. I've also powered off the reader and re tried. Any suggestions?

Re: Contactless reader update issue

Stormageddon — Sat, 23 Oct 2021 12:30:42 GMT

Have you tried resetting the reader?

Press and hold the button for about 20-40 seconds until you see four RED flashing lights, after the 4 orange lights you would normally get.

Re: Contactless reader update issue

Peg23 — Sat, 23 Oct 2021 13:12:52 GMT

Thank you I just tried that. It continues to have the same problem, updating to 99% and then disconnecting

Re: Contactless reader update issue

Peg23 — Sat, 23 Oct 2021 13:51:32 GMT

It's working now. I had a micro- USB magnetic end plugged into the charging slot the whole time. Once I took it out, it connected no problem. I should have thought of this sooner!

Re: Contactless reader update issue

Stormageddon — Sat, 23 Oct 2021 13:55:46 GMT

Awesome! 👌

Re: Contactless reader update issue

jsilljer — Sat, 07 May 2022 03:47:25 GMT

I had this problem a month ago, now again. I have spent HOURS trying to get it connected and it gets to 99% and crashes, this is very frusterating

Re: Contactless reader update issue

Stormageddon — Sat, 07 May 2022 05:09:56 GMT

I'm going to suggest replacing it. The last firmware update, I believe, nerfed a lot of readers. Most people (myself included) had to replace it after not using it for 2 years during the pandemic. For the frustration and the possibility of lost sales, replace it.