The CheckM8 development team has introduced a new bypass solution for passcode-locked iPhones and iPads powered by A12 and A13 chips. The solution supports cellular signal functionality and uses a Raspberry Pi module, the USBLiter8 exploit, and Passcode Bypass Software developed by the CheckM8 team.
Only devices running the indicated iOS version are supported, provided they are on the passcode lock screen or have menu access (already activated).
AttentionThe Checkm8 software alone is not enough to complete this service. You will also need a compatible Raspberry Pi Pico module, the appropriate USB data cables, and physical access to the device.
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Hardware-Level Exploit
USBLiter8 is a hardware-level SecureROM exploit tailored for Apple devices powered by A12 and A13 Bionic chips. By running at the bootrom level via a USB-connected Raspberry Pi Pico (RP2350-based) board, it triggers before iOS and Apple's signed boot chain load.
This process places the device into a "pwned" DFU mode, granting CheckM8 software the low-level execution environment required to bypass passcode locks while retaining full cellular functionality.
1. Device Status
The target device must be activated and either remain on the passcode lock screen or allow access to the Settings menu.
2. Supported Firmware
Must be running a supported version of iOS or iPadOS (including supported 18.x and 26.x builds).
3. Hardware Setup
Requires a compatible Raspberry Pi Pico board, appropriate USB data cables, and direct physical access.
4. DFU Injection & Execution
The device must be placed into DFU mode so USBLiter8 can establish low-level communication for the CheckM8 software to complete the process.
This service is intended strictly for devices you own or have explicit legal authorization to service. Professional reseller pricing, bulk management, and API access are available.
Service Pricing
Designed for ease of use, the CheckM8 tool can bypass the passcode lock screen on a disabled iPhone or iPad and restore full device functionality.
$35
$30
Part 1 of 2
PLEASE NOTE:
This guide is intended for supported A12-A13 iPhone and iPad models. Use CheckM8 only with a device you own or are legally authorized to service.
- A supported A12-A13 iPhone or iPad
- The latest CheckM8 application
- A compatible RP2350 module
USB Type-C and device data cables
- A stable internet connection
The process has two parts:
During Part 2, repeat Steps 1-3 and Steps 11-15 before completing Step 16. Do not flash the RP2350 module again.
Step 1.
Connect the Locked Device
Connect the passcode-locked iPhone or iPad to your computer and launch the CheckM8 application.
Step 2.
Follow the DFU Mode Instructions
CheckM8 will identify the device and display instructions for placing it into DFU mode. Follow every on-screen prompt.
Step 3.
Connect the RP2350 Module
Connect the compatible RP2350 module to your computer using a USB Type-C data cable.
Step 4.
Open the RP2350 Flashing Section
Follow the instructions displayed in CheckM8 to open the RP2350 flashing section.
Step 5.
Select the Correct RP2350 Model
Select the exact RP2350 module connected to your computer. Waveshare RP2350 USB-A is recommended.
Step 6.
Check the Module Type
Confirm that the model selected in CheckM8 matches the physical RP2350 board connected to the computer.
Step 7.
Flash the RP2350 Module
Keep the RP2350 module connected, verify the selected model and click the Flash button in CheckM8.
Step 8.
Wait for Flashing to Finish
Wait until CheckM8 confirms that flashing has completed. Do not disconnect the RP2350 board during this stage.
Step 9.
Disconnect the USB Type-C Cable
Disconnect the USB Type-C cable from both the computer and the prepared RP2350 module.
Step 10.
Connect the Device to the RP2350 Module
Connect the device cable to the USB Type-A port on the prepared RP2350 module.
Step 11.
Start the RP2350 Process
Follow the CheckM8 connection diagram. When the device is connected correctly, the RP2350 stage should begin.
Step 12.
Check the RP2350 Status Light
Use the board status light to follow the current stage:
Step 13.
Reconnect the Device to the Computer
After a successful result, disconnect the device from the RP2350 module and reconnect it directly to the computer.
Step 14.
Continue in CheckM8 Software
CheckM8 will recognize the device and prompt you to start the available service or complete the order.
Step 15.
Start the First Software Process
Click Start and keep the device connected until CheckM8 confirms that the first part has been completed.
Part 2 of 2
Do not flash the module again:
The RP2350 module was prepared during Part 1. Do not repeat Steps 4-9 unless CheckM8 specifically instructs you to prepare the board again.
• Repeat Steps 1-3
• Repeat Steps 11-15
• Complete Step 16
Keep everything connected:
Follow the CheckM8 prompts and do not disconnect the device until the final completion message appears.
Repeat Step 1.
Connect the Device and Launch CheckM8
Connect the device directly to your computer and open the CheckM8 application again.
Repeat Step 2.
Follow the DFU Mode Instructions
Follow the on-screen instructions until CheckM8 confirms that the device is in the required mode.
Repeat Step 3.
Reconnect the Prepared RP2350 Module
Disconnect the device after its mode has been confirmed and reconnect the already prepared RP2350 module.
Repeat Steps
Run the Second Hardware and Software Process
Repeat the same connection sequence used in Steps 11-15:
Do not repeat the RP2350 flashing procedure during Part 2.
Step 16.
Complete the Procedure
After the second process finishes, wait for CheckM8 to display the final completion message before disconnecting the device.
Process completed successfully:
You can now complete the device setup, sign in with your Apple ID and test the available functions.
One compatible RP2350 module is required to complete the CheckM8 process. We recommend the Waveshare RP2350 USB-A because its built-in USB-A host port allows you to connect a supported iPhone or iPad without soldering a USB cable directly to the board.
Waveshare RP2350 Zero, Pimoroni Tiny 2350 and Raspberry Pi Pico 2 may require additional wiring or soldering before use.
The easiest and recommended option. It includes USB-C for connecting the module to your computer and a built-in USB-A host port for connecting a supported iPhone or iPad.
A compact RP2350 development board with a USB-C connector. It does not include a USB-A host port, so additional cable preparation and board-specific wiring may be required.
A postage-stamp-sized RP2350 development board with USB-C. It is best suited to experienced users because a compatible cable must be prepared using board-specific wiring.
The official RP2350 development board from Raspberry Pi. It is supported but does not include a USB-A host port, so additional wiring and soldering are required.
CheckM8 Reviews
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Verified Client
There can be many reasons for a iphone user to forget his/her icloud credentials. But then your services make sure that such person can still enjoy all the benefits of an expensive iphone. keep it up and stay blessed.
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Very Easy to pay and get INSTANT results. Like instantly. I will use them again!
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Verified Client by TrustPilot
Working great. worked right away with checkra1n. iMessage, facetime and even find my device worked perfectly. All icloud services working just like if it wasn't activation locked.
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Verified Client by TrustPilot
Unreal! I've tried so many so-called "unlock" services when I unknowingly bought an icloud locked ipad and have been disappointed every single time....until now! It works! It works fast. Customer service is prompt and the final result is exactly what they promise! Definitely recommend Checkm8. They will have my business again.
Dimitris (GR)
Verified Client by TrustPilot
I can't believe it's working! Honestly I was a bit skeptical at first but I decided to pull the trigger for my locked device, I was a bit worried that it might not work and end up wasting my money but the application said my phone was supported and sure enough.. It worked! I'm so happy to have access to my device again and it was a very easy and painless process. Thank you very much Checkm8 team, you are fantastic!
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Verified Client by TrustPilot
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