Nano 4G - Revision history

User890104 at 19:16, 6 January 2026

2026-01-06T19:16:42Z

← Older revision		Revision as of 19:16, 6 January 2026
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	\| Samsung S5L8720		\| Samsung S5L8720
	\| 339S0049 ARM, K4X56323PI-KGC4, YWE025QH 825, APL0278A00, N1B2HOP 0831		\| 339S0049 ARM, K4X56323PI-KGC4, YWE025QH 825, APL0278A00, N1B2HOP 0831
	\| ARM1176JZF-S processor. It is definitely worth knowing that this is the exact same processor used in the iTouch 2G. This could mean that some of the same exploits for that could possibly be used. [~~http~~://~~theiphonewiki~~.com/wiki/~~index.php?title=S5L8720_(~~Hardware~~) Here~~] is a very interesting page ~~about~~ the ~~S5L8720 processor~~.		\| ARM1176JZF-S processor. It is definitely worth knowing that this is the exact same processor used in the iTouch 2G. This could mean that some of the same exploits for that could possibly be used. [https://theapplewiki.com/wiki/S5L8720/Hardware S5L8720/Hardware] is a very interesting page on the Apple wiki.
	\|-		\|-
	\|		\|

2025-06-23T04:50:27Z

move images to components section

← Older revision		Revision as of 04:50, 23 June 2025
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	{{DISPLAYTITLE:iPod nano (4th generation)}}		{{DISPLAYTITLE:iPod nano (4th generation)}}
	~~[[Image:nano_4g_frt_a.png\|500px]]~~
	~~[[Image:nano_4g_bck_a.png\|500px]]~~
	==Components==		==Components==
			[[File:nano_4g_frt_a.png\|500px\|thumb\|none\|Front of the circuit board]]
			[[File:nano_4g_bck_a.png\|500px\|thumb\|none\|Back of the circuit board]]
	{\| class="wikitable"		{\| class="wikitable"
	! Label !! Component !! Part !! Markings !! Notes		! Label !! Component !! Part !! Markings !! Notes

2025-06-21T18:37:24Z

add display title

← Older revision		Revision as of 18:37, 21 June 2025
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			{{DISPLAYTITLE:iPod nano (4th generation)}}
	[[Image:nano_4g_frt_a.png\|500px]]		[[Image:nano_4g_frt_a.png\|500px]]
	[[Image:nano_4g_bck_a.png\|500px]]		[[Image:nano_4g_bck_a.png\|500px]]

2023-03-08T14:31:06Z

← Older revision		Revision as of 14:31, 8 March 2023
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	\|-		\|-
	\| Mystery Interrupt Thing		\| Mystery Interrupt Thing
	\| ~~0x3a90_0000~~		\| 0x39a0_0000
	\| Not the VICs (0x38e0_0000, 0x38e0_1000), not the EdgeIC (0x38e0_2000). Seems to hold 7 different 32-bit registers for interrupt status at 0xa0, and 7 different 32-bit registers for interrupt mask at 0xc0. The 7 different registers correspond to 7 'modes' of ISRs set up in the bootrom. Not much is known about what it does, and what these 'modes' are. To be investigated.		\| Not the VICs (0x38e0_0000, 0x38e0_1000), not the EdgeIC (0x38e0_2000). Seems to hold 7 different 32-bit registers for interrupt status at 0xa0, and 7 different 32-bit registers for interrupt mask at 0xc0. The 7 different registers correspond to 7 'modes' of ISRs set up in the bootrom. Not much is known about what it does, and what these 'modes' are. To be investigated.
	\|}		\|}

2021-12-09T22:41:26Z

@@ Line 50: / Line 50: @@
 == Bootrom ==
-See [[S5L8720 Bootrom]].
+See [[S5L8720 Bootrom]]. Different from the S5L8720 bootrom used in the iPod Touch 2G (which is iBoot-based, a.k.a. SecureROM).
 ==Reverse Engineering Results==

2021-12-09T22:25:36Z

← Older revision		Revision as of 22:25, 9 December 2021
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	\|		\|
	\|}		\|}

			== Bootrom ==

			See [[S5L8720 Bootrom]].

	==Reverse Engineering Results==		==Reverse Engineering Results==

2013-07-30T16:52:24Z

2011-07-12T15:17:03Z

← Older revision		Revision as of 15:17, 12 July 2011
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	\| 4		\| 4
	\| Accelerometer		\| Accelerometer
	\| [http://www.st.com/stonline/products/~~families~~/~~sensors~~/~~motion_sensors/lis331dl~~.~~htm LIS331DL~~]		\| [http://www.st.com/stonline/products/literature/ds/12726.pdf LIS302DL]
	\| 33DL, 2827		\| 33DL, 2827
	\| The newer Touch's, iPhone's, and even the iPad have similar accelerometers, and I've discovered a pattern in the chip names.		\| The newer Touch's, iPhone's, and even the iPad have similar accelerometers, and I've discovered a pattern in the chip names.

2011-07-12T15:15:18Z

← Older revision		Revision as of 15:15, 12 July 2011
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	\| 5		\| 5
	\| Audio codec		\| Audio codec
	\| ~~Probably Cirrus~~		\| [http://www.cirrus.com/en/pubs/proDatasheet/CS42L55_F1.pdf CS42L58]
	\| 338S055C, 189N0824, SGP		\| 338S055C, 189N0824, SGP
	\| I determined this because the [[Nano 5G]] has a similar chip, which we are sure of the identity. One person lifted this chip and found that the pins connect to the LCD connector. Not much info was given, and it could just be a common ground, but the identity of this chip is still up in the air.		\| I determined this because the [[Nano 5G]] has a similar chip, which we are sure of the identity. One person lifted this chip and found that the pins connect to the LCD connector. Not much info was given, and it could just be a common ground, but the identity of this chip is still up in the air.

2011-07-09T15:34:58Z

Add status registers

@@ Line 9: / Line 9: @@
 | Samsung S5L8720
 | 339S0049 ARM, K4X56323PI-KGC4, YWE025QH 825, APL0278A00, N1B2HOP 0831
-| ARM1136JZF-S processor. It is definitely worth knowing that this is the exact same processor used in the iTouch 2G. This could mean that some of the same exploits for that could possibly be used. [http://theiphonewiki.com/wiki/index.php?title=S5L8720_(Hardware) Here] is a very interesting page about the S5L8720 processor.
+| ARM1176JZF-S processor. It is definitely worth knowing that this is the exact same processor used in the iTouch 2G. This could mean that some of the same exploits for that could possibly be used. [http://theiphonewiki.com/wiki/index.php?title=S5L8720_(Hardware) Here] is a very interesting page about the S5L8720 processor.
 |-
+|
@@ Line 50: / Line 50: @@
 ==Reverse Engineering Results==
 Timers: These clockgates have been found to be related to timers: 37, 55, 56, 57, 58, 59, 60, 69, 70, 128, 129, 130, 131, 132, 133, 134, 150 and 151.
 ==Helpful pages==