Nexus S¶

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

	Device	Nexus S
	Manufacturer	Google/Samsung
	Codename	crespo
	Ships with root	No
	Root possible	Yes, bootloader is easy to unlock
	SIM Unlocked	Possible
	In production	Yes
	Replicant status	Supported, GSM flavors (GT-I9020, GT-I9020A, GT-I9023)
	Developers involved	PaulK
	Replicant version	Replicant 4.0
	Last image	Replicant 4.0 0005

Replicant status¶

Replicant status on Nexus S: ReplicantStatus

Known freedom issues:

• Proprietary and likely signed bootloader
• Modem, WiFi, 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: FastbootInstallation

Build guide¶

Build guide for the Nexus S: NexusSBuild

Technical infos¶

• List of the proprietary software shipped on the Nexus S: NexusSProprietary
• List of the Nexus S firmwares: NexusSFirmwares

• Details about the S5PC110 Hardware design used in the Nexus S: 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
WiFi	BCM4329	Linux kernel	implemented in WiFi 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