Upgrade Failure

ZTE ZXSEC US: How to rollback to the previous image after a failed upgrade

Q: Where can I find the ZTE official documentation?

https://support.zte.com.cn — search the product family + feature name.

By Sai Kiran Pandrala · reviewed by Sai Kiran Pandrala, Editor Last verified: 2026-05-30

⚡ At a glance

Vendor	ZTE
Operating system	ZXR10 / ZXROS
Category	Upgrade Failure
Skill level	Intermediate to advanced
DIY-able?	Yes with CLI access; some scenarios need ZTE Customer Support + RMA.

Image upgrades on ZTE platforms have one cardinal rule: verify the running image first. `show version` on ZXR10 / ZXROS is the single most useful command in a change window because it tells you exactly what you are rolling back to if something breaks.

Across the ZXSEC US family the upgrade syntax is `load image ftp://10.10.1.100/zxros.img`, pay attention to the activation step because ZXR10 / ZXROS treats download and activate as separate transactions. Forgetting the activation step is the single most common reason an 'upgrade' silently does nothing.

ZTE Customer Support expects you to capture pre-upgrade state and have a console session open during the change window. Anything less is a support-case waste of time if it goes sideways.

What this guide covers

Rollback to the previous image after a failed upgrade on a ZTE ZXSEC US (ZXR10 / ZXROS).

Step-by-step

Confirm there's a previous image still on flash.
Set the boot variable to that previous image.
Reboot.
Verify the version is back to the prior release.
Investigate the upgrade failure separately: do not re-attempt without root cause.

CLI / commands

# Boot recovery prompt: Bootrom

# Verify image
show version

# Upgrade
load image ftp://10.10.1.100/zxros.img

# Save / commit
write

# Rollback
load configuration ftp ftp://10.10.1.100/backup.cfg

Recovery options

Boot loader recovery (Bootrom)
Rollback to the previous image with load configuration ftp ftp://10.10.1.100/backup.cfg
Force failover to a known-good standby (HA platforms)

Frequently asked questions

Will this work on my specific ZXR10 / ZXROS version?

The procedure reflects current ZXR10 / ZXROS behaviour. Older releases may need minor syntax adjustments, use the CLI help (? or tab-completion) to verify.

Should I open a ZTE Customer Support case immediately?

Open one if you suspect hardware failure or the symptom persists after a maintenance-window reload. Make sure your support entitlement is active first.

Where can I find the ZTE official documentation?

https://support.zte.com.cn. search the product family + feature name.

Is this procedure safe in production?

Test in a lab or maintenance window first. Capture pre-change state so you can roll back.

All ZTE fix guides → /zte/
All vendor guides → /vendors/

Related guides worth a look while you sort this one out:

References

ZTE support portal: https://support.zte.com.cn
ZTE knowledge base: https://support.zte.com.cn
ZTE security advisories: https://support.zte.com.cn/support/news/AnnoucementOverviewLatest.aspx
Open a case: https://support.zte.com.cn

Reference material, not professional advice. Validate against your specific ZXR10 / ZXROS version and test in a non-production environment before applying.

Why this matters for your day-to-day

A ZTE device that's misbehaving costs more than the fix itself: lost productivity, missed calls, security risk, even safety risk in some categories. Treating the symptom quickly with a documented procedure is cheaper than letting it persist. The steps above are written to get you back to working in under an hour where possible, and to flag clearly when escalation is the right call.

Safety + preconditions

Before any work on a ZTE device:

Unplug from mains for any internal-access procedure.
Discharge stored energy (capacitors in PSUs, residual battery charge) per manufacturer guidance.
Use ESD-safe handling for boards and modules, no carpet, no wool sleeves.
Avoid moisture; never apply liquids near vents or connectors.
If you smell smoke, see scorch marks, or feel uneven heat, stop and escalate.

Quick verification

Before you walk away from a ZTE device fix, run through:

1. Reproduce the original trigger: does the issue reappear? 2. Check the device's status / health screen for any new alerts. 3. Confirm paired devices (app, hub, controller) reconnected. 4. Save / commit any configuration changes per the device's normal workflow. 5. Note the change in your maintenance log with date + firmware version.

Escalation guide

For a ZTE device, the right escalation depends on impact:

Cosmetic / minor: log a ticket via the ZTE app or web portal. Response 1-3 business days.
Mid-impact: phone support. Have your serial number ready.
Critical (production down, safety issue): in-person dealer / TAC visit. Bring proof of purchase.
Out of warranty: third-party repair shop with manufacturer-certified technicians.