Line 10:
Line 10:
There are two copies of boot2 housed in [[Hardware/NAND|NAND]] blocks 1-7 in case of failure, loaded by [[boot1]].
There are two copies of boot2 housed in [[Hardware/NAND|NAND]] blocks 1-7 in case of failure, loaded by [[boot1]].
−
boot2 was updated in the [[4.2]] update to [[boot2v4]], the only time Nintendo has ever pushed a boot2 update. This was done by calling ES_ImportBoot to install it into the boot2 region of the NAND. Unfortunately, Nintendo did not test ES_ImportBoot very well, which led to many Wiis receiving a [[Brick#Low Level Brick (LLB)|low-level brick]], even if they were previously unmodded.
+
boot2 was updated in the [[4.2]] update to [[boot2v4]], the only time Nintendo has ever pushed a boot2 update, besides on [[Prelaunch System Menu|prelaunch consoles]]. This was done by calling ES_ImportBoot to install it into the boot2 region of the NAND. Unfortunately, Nintendo did not test ES_ImportBoot very well, which led to many Wiis receiving a [[Brick#Low Level Brick (LLB)|low-level brick]], even if they were previously unmodded. The cause of this is unknown, although it may be related to the failure to write ECC data.
== Version history ==
== Version history ==