2,939
edits
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|-
|-
| 0x010000
| 0x010000
| 0xF0000
| 0xEC000
| 60 additional BCTs, normally unused/empty on retail systems.
| 59 additional BCTs, normally unused/empty on retail systems.
|-
| 0x0FC000
| 0x4000
| [[#System Update Control|System Update Control area]]
|-
|-
| 0x100000
| 0x100000
| 0x184000
| 0x184000
| 0x20
| 0x20
| Unknown pseudorandom data, often changes on reboot. All zero on 1.0.
| [2.0.0+] Unknown SHA-256 hash. Changes every boot when the main menu is loaded.
|-
|-
| 0x184020
| 0x184020
| 0x8?
| 0x8?
| Increments on every boot until hitting a certain number? Bottom 10 bits (0x3FF) are always zero. All zero on 1.0.
| [2.0.0+] Unknown counter. Increments by 0x400 on every boot when the main menu is loaded.
|}
|}
| 0x40000
| 0x40000
| SafeMode Firmware [[Package1|package1]] from [[Title_list#System_Data_Archives|Title 010000000000081A]] (backup)
| SafeMode Firmware [[Package1|package1]] from [[Title_list#System_Data_Archives|Title 010000000000081A]] (backup)
|-
| 0x080000
| 0x40000
| Reserved
|-
| 0x0C0000
| 0x40000
| Reserved
|}
=== System Update Control ===
The 0x4000 bytes at offset 0xFC000 are used by [[NS_Services|NS]] for keeping track of the status of a system update. This area is used by the [[NS_Services#ns:su|ISystemUpdateControl]] commands "ApplyDownloadedUpdate", "ApplyCardUpdate" and "ApplyReceivedUpdate".
{| class="wikitable" border="1"
|-
! Offset
! Size
! Description
|-
| 0x0
| 0x1
| Set to 1 during a system update. Cleared after [[NCM_services|NCM]] finishes updating all titles.
|-
| 0x1
| 0x1
| Set to 1 during a system update. Cleared after [[NCM_services|NCM]] finishes updating all titles.
|}
|}