Secure OTA Updates
for IoT & Embedded Devices
Deploy firmware updates to your device fleet with confidence. Cryptographically signed binaries, staged rollouts, and real-time fleet monitoring — all from one dashboard.
Free for up to 10 devices • No credit card required
OFFICIAL SDK FOR ZEPHYR RTOS — REST API FOR ANY DEVICE
Why Teams Choose ZeltaSoft
Everything you need to ship firmware updates safely and efficiently
Cryptographic Signing
ECDSA P-256 signatures with SHA-256 verification. Your devices only accept firmware signed with your private key.
- Generate or upload keys
- SHA-256 integrity check
- Signed download URLs
Staged Rollouts
Deploy to a percentage of devices first. Monitor success rates and auto-advance when thresholds are met.
- Multi-stage deployments
- Success rate monitoring
- Pause/resume anytime
Device Groups
Organize devices into logical groups. Target specific groups for beta testing or regional deployments.
- Flexible grouping
- Target rollouts to groups
- Beta tester management
Fleet Dashboard
Monitor all your devices in real-time. Track update progress, version distribution, and device status.
- Real-time device status
- Version analytics
- Update logs & history
Zephyr SDK
Native C library for Zephyr RTOS with MCUboot integration. Full OTA state machine out of the box.
- MCUboot A/B partitions
- Automatic rollback
- Device provisioning
Team Management
Invite team members to your organization. Role-based access for owners, admins, and members.
- Email invitations
- Role-based access
- Organization settings
How It Works
Get your first OTA update deployed in minutes
Create Product
Define your product and generate an API key
Upload Firmware
Upload your binary — we compute hash and sign it
Integrate API
Call our REST API to check for updates
Deploy
Activate or create a staged rollout
Simple, Transparent Pricing
Start free, scale as you grow