stands for iPhone Carrier Configuration file — sometimes referred to as iPhone Carrier Bundle. It is a small configuration file that contains essential settings allowing your iPhone to communicate properly with your mobile carrier's network.
: The IMSI is a unique identifier stored on SIM cards. It is comprised of a 3-digit Mobile Country Code (MCC) and a 2- or 3-digit Mobile Network Code (MNC). Hardware adapters target the first 7 digits of a carrier's identity to trick the iPhone activation server.
Generally uses 2040400 or other tailored codes turbosim.cn.
Ensure you successfully executed the Terminal/Command Prompt command in Step 1. If iTunes/Finder is updated, it may require a system restart to accept carrier testing mode. load ipcc via imsi 7
The device will quickly process the file without a full reboot. Check your cellular settings menu to verify if the new carrier profile name and APN settings are active. Risks and Troubleshooting
In most countries, unlocking a carrier-locked phone for personal use is legal. However, be aware that:
The exact wording varies by SIM adapter brand and firmware version. stands for iPhone Carrier Configuration file — sometimes
means pairing the specific IMSI code (representing the locking carrier) with a custom IPCC file designed to fix carrier configurations (like activating 5G for a specific provider) in the iPhone's carrier bundle settings. Common IMSI Codes and IPCC Pairings (2025/2026 Context)
There are several legitimate use cases:
<key>SupportedIMSI</key> <array> <string>001017000000000</string> <!-- IMSI 7 test range --> <string>310410</string> <!-- production example --> </array> It is comprised of a 3-digit Mobile Country
Hold down the (Windows) or Option key (Mac) and click Update (do not click Restore).
| Requirement | Detail | |-------------|--------| | | Apple signs each IPCC for a specific carrier ID and iOS version. | | Device UDID | Must be added to Apple’s developer carrier testing portal (for unsigned bundles). | | No baseband mismatch | IPCC must match baseband firmware version. | | Supervised mode (optional) | Required for some forced loads without SIM. | | Jailbreak or internal tools | Sometimes needed if official methods fail. |