Nexus S (I902x)¶

• Table of contents
• Nexus S (I902x)
  • Replicant status
  • Installation guide
  • Build guide
  • Technical infos
    • Hardware table

	Device	Nexus S (I902x)
	Manufacturer	Google/Samsung
	Release date	December 2010
	Codename	crespo
	Supported flavors	GSM: I9020, I9020A, I9023
	Developers involved	PaulK
	Latest image	Replicant 4.2 0002

Replicant status¶

Replicant status for the Nexus S (I902x): ReplicantStatus

Known freedom and security issues:

• Proprietary and likely signed bootloader
• Modem, Wi-Fi, Bluetooth and NFC firmwares are non-free
• Modem can access part of the CPU RAM and could use it to spy

Installation guide¶

Installation guide for the Nexus S (I902x): NexusSI902xInstallation

Build guide¶

Build guide for the Nexus S (I902x): NexusSI902xBuild

Technical infos¶

• List of the Nexus S (I902x) firmwares: NexusSI902xFirmwares
• Nexus S (I902x) compass calibration: NexusSI902xCompassCalibration

• Details about the S5PC110 Hardware design used in the Nexus S (I902x): S5PC110HardwareDesign
• For Documentation on the preliminary work for freeing its bootloader: S5PC110Bootloader

• Status of the Samsung-RIL modem implementation: Samsung-RIL
• Status of the Broadcom 4751 GPS chip implementation: BCM4751

Hardware table¶

Component	Name	Source	Protocol/implementation
SoC	Samsung S5PC110/S5PV210	Linux kernel	Linux kernel
GPU	PowerVR SGX540	https://secure.wikimedia.org/wikipedia/en/wiki/Exynos	Linux kernel and secret userspace
Audio Codec	WM8994	Linux kernel	Linux kernel ALSA driver
Modem	XMM6160	iFixit	Secret protocol: Samsung-IPC, implemented in libsamsung-ipc and samsung-ril
Wi-Fi	BCM4329	Linux kernel	implemented in Wi-Fi driver
Bluetooth	BCM4329	Linux kernel	implemented in Bluetooth driver
NFC	PN544	Linux kernel	Linux kernel
GPS	BCM4751	http://www.zdnet.com/photos/google-nexus-s-teardown/6189263?seq=59	MEIF, Unknown
Accelerometer	KR3DM	Linux kernel	Linux kernel, Samsung-Sensors
Compass	AKM8973	Kernel sources	Linux kernel, secret userspace
Camera	S5KA3DFX/S5K4ECGX	Linux kernel	Linux kernel, FIMC, V4l2