Talk:06.15.00

This has to be the best AppleFail yet, being able to use this on 3G/3GS... Iemit737 01:56, 29 November 2010 (UTC)

Install check

Why can this be installed on iPhone? I thought as of iOS4.2.1 there's a check for the bb version that must match the firmware. If a wrong (in this case higher) bb version is installed, then iOS doesn't boot. Or why does it boot now? And why can an old baseband be installed at all? Because the version number is higher and before iPhone 4 there was no certificate check? --http 00:16, 30 November 2010 (UTC)

The sig check for the baseband only determines if the baseband firmware is lower than what it should correspond to the iOS firmware then it prevents a successful boot sequence. However since the 3G/3GS use the X-Gold 608 chip it can be flashed to a higher Modem Firmware. By doing so it uses the chips own programming to be exploited using the recycled AT+XAPP injection vector. This however could easily be patched. Now that I answered your question maybe you can help me with this one. Since the iPad has no lock in the baseband why is Ultrasn0w even needed? Leobruh 03:57, 30 November 2010 (UTC)!

The unlock status doesn't reside in the baseband firmware; it's in the seczone. --Dialexio 04:24, 30 November 2010 (UTC)

So the baseband version check does not check for correct firmware version; it checks for "lower than correct" version. #epicfail --http 08:57, 30 November 2010 (UTC)

@Dialexio, so you still have to patch running memory with Ultrasn0w for the on-the-fly ram unlock?

@http, fail in it's biggest form. who knows how long we can use AT+XAPP. Leobruh 11:15, 30 November 2010 (UTC)!

Someone needs to write a baseband downgrader with this to allow normal restores again -geohot