@Stella.Q 

I have 2 untis of NC450, both at firmware 1.5.2 updated via android app, but country firmware is only 1.5.0.

I also have NC260, firmware 1.5.1 updated via android app, but no country tplink firmware.

My problem is

1) All units always go offline, after reboot all, 1 unit NC260 offline may be after hour or two, 1 NC450 last few days, another NC450 last probably few weeks. All units i set to daily automatic reboot.

2) App notification, when all camera online, it will only send notification after i launched the tpcamera app, after i cexit the app, it will still send notification for few hours

3) timezone.. always 8 hours late (my timezone is +8). even after isync it with internet time (web log in) it will suddenly change the time back to 8 hour late.

All these happen after my hand itchy update to latest firmware. so please send me instruction and firmware to downgrade to which ever best version 

In fact I also bought the Tapo series C200, disappointed with it as the android app only send notification after i launched the Tapo app.problem also started after i update the firmware to 1.0.10..

look like it is common level of skills that TP-Link can support their IP Camera and android app.

@Kevin_Z 

hi Kevin,

I realise this is a very old post but could you send me instructions on how to downgrade the firmware on my nc450's please

@Stella.Q 

pleae can you send me the link for the middle firmware please?