Given the components of your query:

User-Friendly: The intuitive interface of Toolzip makes it accessible to a wide range of users. Whether you are a beginner or an experienced professional, you can easily navigate the software and perform tasks.

• Purpose: Reads, edits, and writes QCN files used to store device-specific calibration, IMEI, NV items, and radio parameters on Qualcomm chipsets.
• Common uses: IMEI repair, restoring network configuration after firmware flashes, backing up NV items before major changes, and fixing null IMEI issues.

: Use QFIL or a similar tool to restore the newly modified QCN file back to the device. Essential Details Official Source : The developer's blog is Tungtata.net

General Approach

If you're dealing with a specific tool or software referred to as "QCN Tool" and you're trying to work with zip files or manage data:

If you accidentally erase your modemst1 and modemst2 partitions (common when flashing custom ROMs or unlocking bootloaders), your QCN is wiped. The result? No cellular signal, no Wi-Fi, and a very expensive paperweight.

• Use hex editors or specialized QCN editors only if you understand NV item layout.
• Common edits: repair invalid IMEI fields, tweak radio calibration items.
• Always keep an untouched original backup; test on a secondary device if possible.

The operation of Toolzip is straightforward, thanks to its user-centric design. Here’s a step-by-step overview of how it works: