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Originally tagged Good news, Android.

The bootloader patch for Samsung Galaxy Tab has finally been released. It flashes back unprotected bootloaders over the protected bootloaders, so can flash custom kernels again.

Currently works on Euro/International/Unbranded GT-P1000, SGH-I987 AT&T / Rogers Galaxy Tab, and SGH-T849 T-Mobile Galaxy Tab.

The Latin P1000L and P1000N, as well as CDMA Tabs, are currently not supported.

More details and download at the XDA thread here.