Carefully read the instructions and follow them carefully. After reading the instructions, you will be able to flash your phone within 15 or 20 minutes. Because each phone's set up is a bit different, it's impossible to outline step-by-step guidelines here. However, there are generally a few things you need to know that we'll try to cover. If you're unsure whether your phone is up-to-date or not, it's fairly simple to get the latest online. As long as you know your phone's model number or name, you'll be good to go. If you don't, you can find that online, too. Make sure you have all the drivers you need before you flash! Otherwise the process may not work. Visit your phone company's website (e.g., Samsung) to do so. The software will ask you what your original carrier was, what you're flashing to, and your phone's make and model. It will also prompt you to choose between a "half flash" and a "full flash." A "half flash" is just talk and text, nothing else. If you get into the program you're using to flash, you can "read" the phone, which will then give you all the information you need to continue with the process. Or you can get into it beforehand. The MEID and ESN can be found underneath your phone's battery.  The MEID will be 18 digits (starting with 2) if it's MEID Dec or 15 numbers and letters if its MEID Hex. The ESN will be 8 numbers long and possibly labeled PESN. Your software should have an option to detect your phone, allowing it to be read. If you do this, you don't have to worry about determining the COM port yourself -- it should be able to figure that out for you.  If it is asking you your unlock code, for Verizon phones this is always six zeroes. The lesser common, but still possible, options are six ones or six threes. Certain phones may require you to mess with the PRL. In the US, the  code is *228 (for Verizon/MetroPCS/US Cellular) and ##873283# ("update," in case you didn't notice) for Sprint. In Canada, it's *22803 for Telus Mobility. If for some reason the COM Port is giving you guff, you...

How would you rephrase that briefly using Chinese?
将你选择的刷机软件下载到电脑上，解压相应的文件。 检查驱动器。 了解基础的知识。 记住你手机的移动设备标识MEID和电子序列号ESN。 检测你的手机。 选择“写”。