Sure petcare hub: stuck in a red-light loop and won't connect
- Solid Red vs. Flashing Red — Solid red ears indicate a firmware update in progress. Flashing red ears indicate a network crash or server link failure. Never unplug or reset the hub while ears are solid red.
- Ethernet Connection Required — The Sure Petcare Connect Hub does not have Wi-Fi capabilities; it connects to your router exclusively via an Ethernet cable. The 10-meter (33-foot) range rule applies only to the RF link between the Hub and pet devices (feeders, pet doors).
- 10-Second Base Reset — A factory reset is performed by holding the physical button on the base of the hub (underneath) for 10 seconds while plugging in the power cable. No pin or paperclip is required.
Do not restart or reset the hub if the ears are solid red.
- Solid Red Ears — The hub is performing an active software/firmware update. This process can take up to 30 minutes. Power cycling or performing a factory reset during this state can corrupt the internal memory and permanently brick the hub. Be patient and wait for the update to finish.
- Flashing Red Ears — The hub's software has crashed, or it has lost connection to Sure Petcare's servers. A factory reset is safe to perform only when the ears are flashing red.
Your pet may be shut in or shut out right now. Prop the flap open or use another door until this is fixed — that matters most in hot or freezing weather.
Why the hub gets stuck flashing red
The Sure Petcare Connect Hub serves as a wireless bridge, converting the local Radio Frequency (RF) telemetry of microchip pet feeders and doors into internet-bound cloud updates. When a firmware deployment or security handshake fails, the hub gets stuck in a boot loop.
1. cloud-side security changes at sure petcare
During server-side migrations (such as upgrading SSL/TLS certificate frameworks or changing security handshake tokens on the AWS cloud endpoints), older hub firmware builds can encounter negotiation failures.
Because the hub's internal software is optimized for legacy cryptographic suites, it fails the handshake and crashes on boot. This triggers a rapid flashing red loop on the ears as the hub constantly reboots to retry the connection.
2. software write failures (firmware corruption)
When Sure Petcare pushes automated firmware updates over the internet, the hub writes the fresh software blocks to its local EEPROM storage. If the internet connection drops or suffers packet fragmentation mid-write, the firmware file becomes corrupted.
Unlike modern devices that carry dual-boot partitions, the Sure Petcare Connect Hub has no automatic recovery image. It is stuck with corrupt software blocks, resulting in a persistent flashing red state on boot. A factory reset is the only way to purge the corrupted local storage sectors and force the cloud to push a fresh copy.
Step-by-step fix checklist
Follow these steps to perform a factory reset and download a fresh firmware package.
Sure Petcare Connect Hub
Get a direct replacement Connect Hub to restore link features for microchip pet doors and smart feeders.
If the fix doesn't work
If the factory reset fails to complete, or the hub continues to loop flashing red after re-pairing, the internal storage module has likely suffered hardware degradation. A replacement hub restores full connectivity, and your pet devices will automatically re-link to the new hardware.
Recommended sourcing options:
- Sure Petcare Connect Hub (Standalone): Check price for Connect Hub on Amazon →
- Sure Petcare Connect System (Bundle): Check price for Connect System on Amazon →
As an Amazon Associate, Pet Infrastructure earns from qualifying purchases. We may receive a commission when you buy through our links, at no extra cost to you.
Advanced recovery options
Use these configurations for managed networks or routers with custom firewall configurations.
| Network Spec / LED State | Specification / Pattern | Description & Troubleshooting Tip |
|---|---|---|
| Connection Type | Ethernet RJ45 Hardwired Only | The Connect Hub has no Wi-Fi capabilities. It must be connected directly to your router via Ethernet. |
| Outbound Ports | TCP Port 443 (HTTPS) | Requires open outbound port 443 for secure SSL/TLS handshake and firmware downloads. |
| MTU / Packet Size | 1500 bytes (Standard WAN) | Clamp MSS to 1380 bytes on PPPoE or VPN tunnels to prevent packet fragmentation failures. |
| Solid Red Ears | Firmware Update Mode | CRITICAL: active software installation. Never power cycle or reset the hub during this time. |
| Flashing Red Ears | Network Crash / Timeout | The connection to the cloud servers failed. Safe to perform a 10-second factory reset. |
Hub keeps flashing red after factory reset — possible firewall block
If the hub completes the factory reset but continues to flash red, your router's firewall might be blocking the software download. The hub downloads software updates from Sure Petcare's cloud over secure HTTPS (port 443). Some managed routers with Deep Packet Inspection (DPI) or custom filtering rule sets block unrecognized IoT traffic.
Fix: Temporarily disable DPI or content filtering on your router, then repeat the factory reset. Alternatively, connect the hub temporarily to a mobile hotspot or secondary network—this bypasses your home router entirely, letting the hub pull a fresh software update from Sure Petcare's servers without any firewall interference.
On a PPPoE, VPN, or tunnelled internet connection
PPPoE, VPN, or tunneled connections add packet headers that reduce the effective MTU below the standard 1500 bytes (usually to 1420-1452 bytes). The hub's basic network stack cannot reassemble fragmented TCP packets. When the firmware update file arrives in split pieces, the hub drops them, failing the update.
Fix: Enable "MSS Clamping" on your router's WAN settings and clamp it to 1380 bytes. This forces Sure Petcare's servers to send smaller packets that the hub can process without fragmentation. Also disable 802.3x Flow Control on the switch port the hub is connected to.
When to contact Sure Petcare support instead
All Sure Petcare products carry a standard 3-year manufacturer warranty from the date of purchase. If your hub is still under warranty, contact Sure Petcare support before purchasing a replacement. Stuck loops after server-side migrations are typically covered as automatic software defects.
Have your unit's serial number ready (located on the base label underneath) and explain that the hub is stuck flashing red after a server update and fails to recover via factory reset.
Frequently asked questions
Rapidly flashing red ears usually indicate that the hub crashed during a software update or lost connection to the cloud servers. A factory reset forces the hub to delete corrupted local files and prompts the servers to push a fresh software update.
How do I factory reset the sure petcare connect hub?
Disconnect the power cable. Locate the physical reset button on the base of the hub (underneath). Press and hold the button directly (no pin or paperclip needed). While holding, plug the power cable back in, keep holding for 10 seconds, and release when the diagnostic light sequence completes.
What is the difference between solid red and flashing red ears?
Solid red ears mean the hub is performing an active firmware update. Do not reset or unplug the unit during this time, as it can brick the hub. Flashing red ears represent a connection crash or update failure, which is safe to reset.
Will a factory reset delete my pet profiles or microchip settings?
No. All pet microchip numbers, feeding schedules, and lock settings are stored in the Sure Petcare cloud databases, not on the hub itself. Resetting the hub only clears its local pairing key. Once you re-add the hub in the app, your configuration will restore automatically.
Based on official manufacturer documentation and practical engineering recommendations. Verified support resources can be found at the Sure Petcare™ official support portal.
Still not fixed? Here’s what to do next.
Some faults are genuinely hardware, and no amount of cleaning or resetting will clear them. If you’ve worked through everything above and it’s still doing it, stop here rather than taking the unit further apart.
- Go to Sure Petcare directly. If the unit is still under warranty, let them replace the part rather than paying for it yourself — contact Sure Petcare support.
- Tell us what didn’t work. We rewrite bulletins when readers show us a case they don’t cover — compliance@pet-infrastructure.com. Tell us the model, what the lights are doing, and which steps you already tried.
- Ask other owners. Search Reddit for your model name plus the symptom (for example “Sure Petcare Connect Hub not cycling”). Someone has almost certainly hit the same fault, and owner threads often surface fixes before the manufacturer documents them.
When to stop and call the manufacturer: if the fix needs the base opened, the motor or control board touched, or any tool beyond a screwdriver — stop. On a unit in this price range, opening it yourself usually voids the warranty, and a warranty repair costs nothing.
Did this actually fix it? 🐾
The complete Sure Petcare Microchip Pet Door Connect (SureFlap) bulletin library
Every Sure Petcare Microchip Pet Door Connect (SureFlap) bulletin published on the site, in one place:
| Bulletin | Covers |
|---|---|
| TB-SPC-001 | SureFlap Microchip Pet Door Connect not reading chips or eating batteries? Clean the… |
| TB-SPC-003 | Are your Sure Petcare hubs clashing? Learn to eliminate RF channel interference,… |
| TB-SPC-004 | SureFlap Microchip Pet Door Connect making a repeated clicking noise? It's almost… |
| TB-SPC-005 | SureFlap Microchip Pet Door Connect not reading your pet's chip? Rule out metal door… |
| TB-SPC-006 | SureFlap Microchip Pet Door batteries dying fast? Dirty sensors, draught excluders, or… |
| TB-SPC-007 | Sure Petcare app notifications showing up minutes late? It's not the same as a hub… |
| TB-SPC-008 | SureFlap pet door or Sure Petcare Hub acting up? Match your exact symptom — battery,… |
| TB-SPC-009 | Sure Petcare specifies alkaline C cells for its Connect range, and rechargeables break… |
| TB-SPC-010 | Slow Sure Petcare alerts come from one of three links: flap to Hub, Hub to router, or… |
Written by Alberto Guardia
I’m a physician working in medical informatics, and I run Pet Infrastructure on my own — no team, no manufacturer sponsorship, no paid placements. I share my home with Wolfgang, a 13-year-old Chartreux with firm opinions about litter and none whatsoever about firmware.
How this page was put together. Every light code, button sequence and timing here is traced back to Sure Petcare’s own documentation, to official support articles, or to several owner reports that agree with each other — and the guide tells you which. Where something genuinely isn’t documented anywhere, I say so instead of filling the gap.
How I check every guide → · Last updated August 2026