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To return a Chromebook in ordinary Developer Mode to its verified startup state, restart it and use the on-screen prompt to return to secure mode—on a Chromebook with a keyboard, press Space and follow the prompts. This transition erases local data, so back up first. If you enabled debugging features or changed ChromeOS system files, use ChromeOS recovery instead; Google says recovery is required to turn debugging off. These steps do not establish how to restore custom firmware or UEFI.
First, identify what you need to undo
“Relock the bootloader” can mean different things on a Chromebook. Turning off ChromeOS Developer Mode and restoring OS verification is not the same as reversing a custom firmware or UEFI installation. Choose the path that matches what changed:
| What changed | General path | Main consequence |
|---|---|---|
| Developer Mode only; ChromeOS is otherwise intact | Return to secure mode from the startup screen with Space and follow the prompts | Local data is cleared |
| Debugging features were enabled or ChromeOS system files were changed | Recover ChromeOS, using internet recovery if available or external recovery media | ChromeOS is reinstalled and the local drive is erased |
| Custom firmware or UEFI was flashed | Use model- and firmware-specific support | General ChromeOS instructions are not sufficient to restore the original firmware |
| Work- or school-managed Chromebook | Contact the organization’s administrator | Forced re-enrollment may apply after a wipe |
Turn off ordinary Developer Mode
- Back up local files. Copy anything important off the Chromebook, especially files in Downloads. Returning to secure mode clears local data. Google’s Chrome Enterprise instructions for wiping ChromeOS device data describe the secure-mode transition; its factory-reset guidance also warns that a reset erases local data.
- Restart to the startup screen. Restart the Chromebook and wait for the Developer Mode or OS verification screen.
- Choose secure mode. On a Chromebook with a keyboard, press Space and follow the on-screen prompts to return to secure mode. Do not use Ctrl+D as the relock action; Google documents it in the flow for entering Developer Mode.
- Wait for the transition to finish. Allow the Chromebook to restart, then complete setup. If a work or school enrollment screen appears, contact the administrator.
Use recovery if debugging features or system files were changed
Powerwash and ChromeOS recovery are different. A Powerwash resets the device but may leave most debugging features in place. Google’s debugging-features guidance says: “To turn off debugging, perform a recovery.” Recovery removes and reinstalls ChromeOS and permanently erases the Chromebook’s hard drive, so back up anything you can before starting.
Recover with a USB drive
- Enter recovery mode on the affected Chromebook. For most keyboard models, hold Esc + Refresh, press Power, release Power, then release the other keys when the recovery message appears. Some models use Esc + Maximize. Follow the prompt if your model displays different instructions.
- Create recovery media on another computer. Use another Chromebook or a Windows or Mac computer with Chrome. Open the Chromebook Recovery Utility and select the affected Chromebook’s correct model. Insert a USB flash drive with at least 8 GB of capacity that can be erased, then create the recovery media. Google’s recovery instructions specify the utility and media requirements.
- Run recovery. On the affected Chromebook, choose recovery using external media and follow the on-screen instructions.
- Set up the Chromebook again. After recovery completes, proceed through setup. The USB drive remains recovery media until you erase it using the Recovery Utility.
Use internet recovery if the Chromebook offers it
Some newer Chromebook models offer internet recovery, which can avoid making a USB drive. Availability and recovery steps depend on the model; older devices may not support this option. Use the recovery choice shown on your Chromebook and follow Google’s model-specific instructions. If your model is not listed or recovery errors persist, contact the manufacturer through Google’s recovery support guidance.
#1 Best Overall
- Read Before You Buy — No Video Output: These adapters support charging and USB 2.0 data transfer, but cannot transmit video signals. Except for standard USB webcams (which use USB data only), they are not compatible with HDMI/DisplayPort cables, video-capable USB-C hubs, or docking stations with video output.
- Convert USB-A Ports to USB-C: Designed to connect USB-C earphones, cables, flash drives, card readers, and other USB-C accessories to standard USB-A ports. Plug-and-play with no drivers or software required.
- Aluminum Alloy Housing: Built with a sturdy aluminum alloy shell that aids in heat dissipation and protects against daily wear and scratches. Designed to maintain a stable and secure connection.
- Compact & Travel-Friendly: The ultra-compact design allows the adapter to stay plugged into your device without blocking adjacent ports or adding bulk, reducing wear and tear on your original USB ports.
- 12-Month Warranty: Backed by a 12-month manufacturer warranty for peace of mind. Designed to meet strict quality control standards for reliable everyday performance.
If custom firmware or UEFI was flashed
Do not assume that returning to secure mode or reinstalling ChromeOS restores firmware that was replaced or modified. Google’s general Chromebook guidance covers Developer Mode, debugging, resets and ChromeOS recovery, but does not establish a universal rollback for custom UEFI or other firmware. Stop before trying key combinations or commands intended for another model. Use instructions specific to the Chromebook model and the firmware project or manufacturer involved.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.For a work- or school-managed Chromebook
Ask the organization’s administrator before wiping or recovering the device. A forced re-enrollment policy can remain in effect after local data is erased, so resetting the Chromebook may not remove its management. Administrators should follow their organization’s enrollment process after a wipe.
Quick Recap
Best Value
- 5-in-1 Connectivity: Equipped with a 4K HDMI port, a 5 Gbps USB-C data port, two 5 Gbps USB-A ports, and a USB C 100W PD-IN port. Note: The USB C 100W PD-IN port supports only charging and does not support data transfer devices such as headphones or speakers.
- Powerful Pass-Through Charging: Supports up to 85W pass-through charging so you can power up your laptop while you use the hub. Note: Pass-through charging requires a charger (not included). Note: To achieve full power for iPad, we recommend using a 45W wall charger.
- Transfer Files in Seconds: Move files to and from your laptop at speeds of up to 5 Gbps via the USB-C and USB-A data ports. Note: The USB C 5Gbps Data port does not support video output.
- HD Display: Connect to the HDMI port to stream or mirror content to an external monitor in resolutions of up to 4K@30Hz. Note: The USB-C ports do not support video output.
- What You Get: Anker 332 USB-C Hub (5-in-1), welcome guide, our worry-free 18-month warranty, and friendly customer service.
Rank #4
- Dual Converters, Infinite Potential：Includes 2× USB C male to USB A female adapters and 2× USB A male to USB C female adapters. Perfect for a wide range of uses—tablets with Bluetooth keyboards, expand USB ports on macbook, and more. Two different converters for all your daily needs
- Next-Level 10Gbps & 3A Charging: No more slow 480Mbps, this usb to usb c adapter has a transfer speed of up to 10Gbps, allowing you to do more transferring in less time. This usb adapter fits both USB A and USB C charger, supporting up to 3A fast charging
- Upgraded Exquisite Craftsmanship: With an aluminum alloy housing and metal connector, the usbc to usb adapter is extremely durable and sturdy. Rigorously tested to withstand more than 10,000 times of plugging and unplugging, ensuring long-lasting performance
- Broad Compatible: The usb c to usb adapter widely supports all USB C/ USB A devices like laptops, tablets, cellphones, car chargers, and phone chargers. Such as compatible with MacBook Pro/Air 2023/2022, Thunderbolt 4/3 Devices,Apple MagSafe Watch 9/8/7/SE/Ultra, iPad Pro 2022/2021, Samsung Galaxy S23/S20/S10, and iPhone 17/16/15 Pro. Plug and play
- Please Note: To reach 10Gbps speed, keep the cable under 3.3 ft. For USB A Male to USB C adapters, try flipping the USB C connector. USB C Male to USB A adapters support bidirectional 10Gbps transfer within 3.3 ft
Rank #3
- Sleek 7-in-1 USB-C Hub: Features an HDMI port, two USB-A 3.0 ports, and a USB-C data port, each providing 5Gbps transfer speeds. It also includes a USB-C PD input port for charging up to 100W and dual SD and TF card slots, all in a compact design.
- Flawless 4K@60Hz Video with HDMI: Delivers exceptional clarity and smoothness with its 4K@60Hz HDMI port, making it ideal for high-definition presentations and entertainment. (Note: Only the HDMI port supports video projection; the USB-C port is for data transfer only.)
- Double Up on Efficiency: The two USB-A 3.0 ports and a USB-C port support a fast 5Gbps data rate, significantly boosting your transfer speeds and improving productivity.
- Fast and Reliable 85W Charging: Offers high-capacity, speedy charging for laptops up to 85W, so you spend less time tethered to an outlet and more time being productive.
- What You Get: Anker USB-C Hub (7-in-1), welcome guide, 18-month warranty, and our friendly customer service.
Rank #2
- 5-in-1 USB-C Hub: Experience comprehensive connectivity featuring a Power Delivery input, two USB-A 2.0 ports, a USB-A 3.0 port, and an HDMI port. (Note: The USB-C power delivery input port is only for connecting an external wall charger to power your laptop and cannot power peripheral devices.)
- 90W Pass-Through Charging: Achieve optimal charging with 90W pass-through power to your laptop, supported by a total input of 100W, with the hub reserving 10W for operational efficiency. (Note: Wall charger not included.)
- Quick Data Transfers: Accelerate your productivity with rapid data transfers using a high-speed 5Gbps USB 3.0 port and two 480Mbps USB 2.0 ports.
- 4K HDMI Display: Enhance your visual experience with a hub capable of delivering 4K resolution at 30Hz in both mirror and extend modes. Please note that this hub is compatible with MacBook (macOS 12 and newer), Windows 10 and 11, ChromeOS, and laptops equipped with DP Alt Mode and Power Delivery. Note: This device is not compatible with Linux.
- What You Get: Anker USB-C Hub (5-in-1, 4K HDMI), welcome guide, 18-month warranty, and our friendly customer service.
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