BL (Bootloader): 必需
As its name implies, this option is used to flash the Bootloader of the device.
AP (Application Processor or PDA): 必需
Android.
CP (Core Processor):
We call it Modem. 带有phone模块的设备必需，其它设备没有。
USER DATA (UMS):
The firmware must contain it to can use, this file is not must have only use when is in firmware. The file is used to format all userdata partition and write new data on it.
用于格式化用户数据分区并写入新数据。
PIT (Partition Information Table):
You only need it if you screw up your partition table or if the firmware specifically requires it because of a change in the partition table layout. 搞坏分区或者固件需要调整分区时需要它
CSC (Consumer Software Customization 或者Country/Carrier Specific Product Code):
It is specific to geographical region and carriers. It contains the software packages specific to that region, carrier branding and APN setting.
- Carrier branding(运营商特定): A CSC may be country or carrier-specific. Samsung releases the same model of a smartphone to Tab with different CSCs. For instance, if you use an unlocked or unbranded Samsung Galaxy phone in the UK, its CSC would be BTU. However, if your device is locked to a network operator, it could be VOD (Vodafone), TMU (T-Mobile), ORA (Orange), XEU (EE & Three), etc.
- System Languages(系统语言): These include the availability of the popular languages used in a geographical area. For example, if you own a Samsung phone in Mexico and flash the firmware meant for India with INS as CSC, you won’t be able to set Spanish, Nahuatl, or Mixtec as your phone’s system language and keyboard.
- Localizations(本地化): Samsung ships its devices with geo-specific or bloat apps relevant to a country or region. Localization also determines the calendar settings and local festivals.
- APN Settings(蜂窝数据上网设置): Access Point Name settings include all configurations to make a mobile device work with the network carriers of a region or country. Without these configurations, you may not be able to enjoy seamless GSM, GPRS, 3G, or 4G mobile networks.
- Samsung FUS(三星固件更新服务): CSC also contains key info to help Samsung’s Firmware Update Server to connect to the correct update channel and roll out the proper software update to your Galaxy device via OTA.
HOME CSC: 功能与CSC相同， 但是在刷入的时候会保存用户数据。
CSC与HOME CSC如何选择
It’s very easy to add the corresponding firmware binaries to respective fields in Odin. You may get confused about whether you should flash CSC or HOME CSC in Odin. Here’s how these two CSC files differ from each other. Once you understand the purpose of CSC and HOME CSC, you’ll have no confusion.
在odin使用时很好选择将相应的固件文件填入Odin的各个字段。但是CSC 和HOME CSC 可能会让人困惑，下面介绍两个文件的不同。
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CSC
If you want Odin to wipe all third-party apps, data, and settings and perform a factory reset while installing the firmware, you should add the CSC binary to Odin. When your Samsung phone or Galaxy Tab boots up, your device will be in the same state (on software level) as it was when you purchased it. You’ll have to set up your device and log into your Samsung and Google accounts again. The image, video, audio, and all other files present on the internal storage will be deleted. Flashing the CSC binary will result in a clean installation. If you feel that your phone is slow and experience any lag or misbehavior, wiping the phone might help fix those issues.
如果你想让Odin清除所有三方app、用户信息和用户设置，并且在安装固件时进行一次恢复出厂设置，那么应当选择CSC选项。那样当刷完设备启动时，它会像刚买时一样进入初始化设置。你得重新设置一次设备并登录三星和谷歌账号(墙内其实不需要)。内存中的所有的文件包括相片视频音频等等都被清空了。选择刷入CSC其实就是一次完全干净的重装。如果你觉得你的手机变慢卡顿，或者有不安全行为，选择这个选项可能帮你解决这些问题。 -
HOME CSC
If your purpose is to just re-install the firmware or update your Samsung device’s software without wiping your apps, all user data, and settings, you should go with the HOME CSC binary. Choosing this file will only affect the software version of your phone while keeping everything intact.
如果你想重装固件或者更新系统版本时不擦除已有的app数据、用户信息和设置数据，那么在使用Odin时选择HOME CSC。选择这个选项只会影响您的软件版本，并且保持所有数据完好无损。
那些能够积蓄所有能量来思考和探索客观以及永恒事物的人，乃是获得了上天的赐福，而我也为此感到非常的高兴和愉快，这一天赋准许人们置个人的命运和旁人的态度于不顾。然而，这种独立性切不可使我们对于那些作为人类而时刻必须承担的过去，现在和未来的责任熟视无睹。---阿尔伯特 爱因斯坦
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