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The maintenance of iPhone startup constant current and current jump faults

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In this lesson, we mainly learn how to flash the phone with Aisi Assistant,

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and how to check the error codes when flashing the phone

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Aisi flashing error viewing method

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When iTunes flashes, it will report a numerical error

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For Aisi, we usually look at the flashing progress

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Different progress errors, maintenance methods are also different

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Next, let's take a look at the process of flashing the phone with Aisi Assistant

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When the mobile phone enters the flash mode,

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the computer can recognize that it has entered the recovery mode or DFU mode

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Whether it is recovery mode or DFU mode, we can all flash the phone

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Let's flash the machine next

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After the computer can recognize it,

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we download the system of the corresponding model

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I have already downloaded this, we can directly flash it

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When flashing, there is one-key flashing, iTunes flashing,

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professional flashing, and batch flashing

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We can choose different flashing modes

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In actual maintenance, some Apple machines cannot be flashed with Aisi Assistant,

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but can be flashed with iTunes

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Some cannot be flashed with iTunes, but they can be flashed with Aisi

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Like this kind of flashing software,

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we can't flash it out of date, so we can exchange software to try it out

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Under normal circumstances, we choose one-click flashing

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When we choose one-key flashing,

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there will be several options below,

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including retain user data, regular fast flashing,

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anti-data recovery flashing, and repair flashing

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Keep user data,

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that is, the data in the hard disk will not be erased

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In this case, if you flash the machine with a normal machine,

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there is generally no problem

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If it is a faulty machine, if you want to keep the user data and flash the machine,

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most of them will fail to flash the machine

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If the machine fails, the data cannot be saved

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Repair flashing means that when the mobile phone data is full and there is no space,

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it may cause the boot stuck to white apple, or the white apple to restart

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But if we want to keep the data of the mobile phone,

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we can try to use the repair flashing

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This kind of flash mode can't guarantee 100% no problem

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To prevent data recovery, it is to erase all the data in the hard disk

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Under normal circumstances, we will choose the conventional quick flash

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When flashing, there is a prompt message

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If the mobile phone is bound with an Apple ID,

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we need to prepare the account and password of the Apple ID

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If the account number and password are forgotten,

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even if the machine is flashed, it cannot be used

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Okay, let me demonstrate

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We click to refresh immediately,

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there will be a reminder message asking if you want to keep the data

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and if you want to fix the battery health problem

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We can choose yes or no, it doesn't matter

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If the data is important to the customer, we can back it up first

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But like this kind of machine, it cannot be backed up without turning on

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So we choose to flash directly

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We can see the progress bar when we're flashing with Aisi assistant

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On the side, we can also see Toggle Diagnostic Mode

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After switching between different modes,

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we will see the steps of flashing

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When it is flashing to 20%, there will be a progress bar on the screen

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If the progress bar is black and has passed through,

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there will be no data in the phone

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21% to 60%, it is usually writing system files to the hard disk

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If there is a problem with this process, it is generally a hard disk failure

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If it is still not normal after replacing the hard disk,

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there may be a problem with the CPU

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During the flashing process, we also need to observe the text under the progress

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The file system is being written, and data is still written to the hard disk at this time

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flashing firmware

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Flashing the firmware is flashing the baseband part

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Now the progress has reached 80%

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Sending baseband

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After it reaches to 80%, the system key bag is being established,

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basically the machine can be used normally

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During the flashing process, as long as the flashing is not 100%,

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after the machine is powered off, the next time it is turned on,

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it will be in a constant current state, and the machine will not be turned on

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Ok, flashing is complete

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After the flashing is completed,

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the phone will enter the progress bar again, which takes about 5 minutes

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After the progress bar is finished, the computer can recognize the information of the mobile phone,

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which belongs to the flashing state of a normal machine

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Ok, that's all for this video