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Create a bootable USB drive with macOS Catalina 10.15.7. Sliver runs most stably on this version. Boot from the USB and run Sliver there.

Follow these instructions precisely. This fix has a 90% success rate according to community feedback.

In the iOS bypass and checkm8 community, Sliver (developed by Appletech752) is one of the most widely used tools for iCloud bypass on Windows. However, following the release of Sliver 6.1, many Windows users encountered a specific error that prevented the software from functioning correctly.

This write-up covers the cause of the issue and the step-by-step fix to get Sliver 6.1 running on Windows.


Before retrying, verify these checklist items:

If all checks pass and Error 61 persists, your device may have a hardware issue (bad NAND or damaged USB controller). In that case, consider a motherboard-level repair.


ipwnder_lite -p

To fix error 61 permanently, you must understand its root cause. The Sliver tool (versions 6.1 and 6.2) communicates with the iPhone via a combination of the pongoOS (a lightweight USB booter) and the ramdisk (a temporary operating system loaded into RAM). Error 61 arises when:

Published by: Tech Recovery Labs
Target Device: iPhone X – iPhone 13 series (A11–A15 chips)
Tool Version: Sliver 6.1 (and 6.2 beta)
Credit: Methodology by AppleTech752