КЛИЕНТ БЫЛ В ШОКЕ ОТ ТАКОЙ РАЗБЛОКИРОВКИ. ВОССТАНОВЛЕНИЕ XIAOMI REDMI NOTE 11 4G / REDMI 10 2022

Summary

In this video, the narrator shares an intriguing story of a client's phone returned in a non-functional state after an attempt to unlock it at a local service center. Initially approached for a simple screen lock removal, the service center's solution disastrously bricked the device, especially challenging due to its production for the Chinese market, with different procedures needed compared to other regions. The narrator meticulously documents the technical journey of diagnosing the problem, including hardware disassembly and software tinkering, to restore the device's functionality. Alongside, the narrator warns of the risks involved in purchasing second-hand devices and concludes with a demonstration of what happens to such repaired phones after a software update, emphasizing the complexity and potential pitfalls of electronic repairs.

Takeaways

• 😮 The client got a phone with a locked screen after being repaired
• 🤔 The phone model says Note 11 but it's actually a Redmi device
• 🧐 The previous repair shop completely broke the phone
• 👨‍🔧 The phone needs to be disassembled and a resistor removed to fix it
• 🔧 The proper engineering firmware needs to be flashed for the phone model
• ✅ After fixes the phone can make calls and install apps
• 😠 The previous repair shop should not have damaged the phone this way
• 😕 Flashing the wrong firmware bricks the phone again
• ⛔️ After restoring you cannot update the OS or the phone won't boot
• 😃 Commenters who watch to the end get to post something annoying

Q & A

What was the issue with the client's phone that was brought in for repair?

The client's phone was locked with a graphical key or password that their daughter had set and forgotten. The phone could not be unlocked or reset through normal methods.

What steps did the narrator take to get the phone working again?

The narrator disassembled the phone, identified and removed a specific resistor on the motherboard, then reflashed the phone with an engineering firmware. He also had to restore the NV data to get calling working again.

Why did the narrator have to try multiple engineering firmwares?

The phone was advertised as a Redmi Note 11 but was actually a Redmi 10 meant for the Chinese market. So the Note 11 engineering firmware didn't work, the narrator had to find the right Chinese market Redmi 10 firmware.

What happened when the narrator updated the phone to MIUI 14 after repairing it?

After updating to MIUI 14, the phone failed to boot and was bricked again. The narrator had to repeat the entire repair and firmware flash process.

What warning did the narrator give about buying these types of phones online?

He warned that if you buy one of these Chinese market phones online and simply update it, it will likely brick and stop working like what happened when he updated to MIUI 14.

Why did the previous repair shop fail to unlock the phone?

The previous repair shop had improperly factory reset the phone, which deleted important NV data and prevented the phone from booting up properly afterward.

What tool did the narrator use to restore the NV data on the phone?

He used the MediaTek NV Restore tool to flash the NV data back onto the phone, which allowed calling and mobile networks to work again.

What was the purpose of removing the specific resistor on the motherboard?

Removing that resistor resets a security check that was preventing the phone from booting after the botched repair job.

How can these kinds of Chinese market phones be identified?

Warning signs include Chinese characters on the back case, firmware differences from global variant phones, and inconsistencies between model numbers on the box and device.

What advice did the narrator give to commenters at the end?

He jokingly asked viewers to comment that they could have fixed the phone in 10 minutes and that the video maker took too long, in order to spark engagement.