ZTE ZXR10 9900X: How to do an emergency image reload from the boot loader
By Sai Kiran Pandrala · reviewed by Sai Kiran Pandrala, Editor Last verified: 2026-05-30
| 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 ZXR10 5950 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
Do an emergency image reload from the boot loader on a ZTE ZXR10 9900X (ZXR10 / ZXROS).
Step-by-step
- At the boot loader, configure IP, gateway, TFTP server.
- Download the image.
- Set the boot variable to the new image.
- Reset to boot.
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.
Related guides
Related fixes
Related guides worth a look while you sort this one out:
- ZTE ZXR10 5950: How to do an emergency image reload from the boot loader
- ZTE ZXR10 5960: How to do an emergency image reload from the boot loader
- ZTE ZXR10 8900E: How to do an emergency image reload from the boot loader
- ZTE ZXR10 M6000: How to do an emergency image reload from the boot loader
- ZTE ZXR10 T8000: How to do an emergency image reload from the boot loader
- ZTE ZXR10 W821: How to do an emergency image reload from the boot loader
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.
How to confirm it's actually fixed
On a ZTE device, the test is rarely "reboot and see". Use this list:
- Active reproduction: trigger the original failure path on purpose.
- Indirect reproduction: do an activity that would expose the same subsystem.
- Status indicator review: every LED / display / app status should be green.
- 24-hour soak: leave the device under normal load overnight; check the next morning.
- Telemetry check: review the device or app's diagnostic log for new error entries.
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.
More frequently asked questions
How long does this fix usually take?
Most users complete the steps in 20-45 minutes the first time, and 5-10 minutes on subsequent runs once the menu paths are familiar.
Why is this happening on a brand-new unit?
Out-of-box defects do occur. If you've owned the device under 30 days and the symptom persists after a factory reset, escalate to the seller for replacement under DOA terms before opening a manufacturer support case.
Does this affect other devices on my network?
Generally no. The procedure is local to this device. Network-side changes (firmware updates that affect TLS, SMB, or routing) are flagged explicitly in the steps.
Is it safe to apply during business hours?
If the device is in production use, apply during a scheduled maintenance window. Most procedures need 2-15 minutes of downtime. Capture pre-change state so you can roll back if needed.
Are there safer alternatives for non-technical users?
Yes, the manufacturer's self-service troubleshooter (HP Smart, LG ThinQ, Samsung Members, similar) usually walks through the same steps in a guided UI. Use that first if you're not comfortable with menu paths.