Luban route stuck on the boot page after swiping U-Boot? A brick-saving note will bring you back to life in place

1. Fault phenomenon

after flashing U-Boot (or Breed) for Luban (CreativeBox-CB3), the web background can no longer enter the system, and as soon as the browser is opened, it is the "U-Boot update page" - upload, restart, re-upload, dead loop. TTL serial port observation, it was found that the machine always stopped at Hit any key to stop autoboot, while the manual bootm prompted Bad Magic Number. This shows that firmware is not actually written in, or written in the wrong place.

2. The reason for 90% of the crater

according to the summary of a large number of netizens, sorted by frequency of appearance:

3. Necessary steps before saving bricks

disassemble the machine to connect TTL: TX→RX, RX→TX, GND→GND, baud rate 115200.
power-on maniac presses space to enter the Breed command line (if you see =>, it is the official U-Boot).
the static IP of the computer network port 192.168.1.2/24, open the tftpd32 firmware directory.
as long as you can see the serial port menu, the machine will be saved; There is no output of the serial port, so the SPI programmer is needed.

4. The three-step method of resurrection in place

STEP-1 Confirm the partition

perform in Breed

part

should see normally

mtd0 0x00000 0x30000 "Bootloader" mtd1 0x30000 0x10000 "Config" mtd2 0x40000 0x10000 "Factory" mtd3 0x50000 0x7a0000 "firmware"

firmware must start with 0x50000, otherwise the address you swiped before must be wrong.

STEP-2 Reflashing the firmware

Breed Menu Selection

Firmware Update → General Firmware → Browse → Check immortalwrt-mt7621-creativebox-squashfs-sysupgrade.bin

key points :

only select the "Firmware" partition, do not manually fill in the address ;
after the upload is completed, wait 5 minutes for Breed to complete the verification + write + synchronization;
see Update completed, rebooting... power off and restart.

STEP-3 Validation Startup

TTL should appear after rebooting

[ 0.000000] Linux version 5.15.xxx [ 0.700000] mt7621_eth: done

browser access 192.168.1.1 has become an OpenWrt login page, and you're done.

5. If you still return to the U-Boot page

Firmware change: immortalwrt, official R1911, Padavan all try once;
change browser: Chrome uploads large files occasionally TCP Reset, which can be solved by changing Edge/IE;
Revert U-Boot: If you want to use the official system again, you must first write the official u-boot-mt7621-68.bin back to mtd0, and then flash the official firmware, otherwise it will always prompt that it is not compatible.
Breed Command Line Example:
```
mtd write u-boot-mt7621-68.bin Bootloader reset
```

6. Summary

"upload 100% ≠ flashing complete" - MT7621 models such as Luban/New Route 3/CR660x, Web-Uboot can easily give people the illusion of "fake success"; As long as TTL can enter Breed, you can operate in the order of "check the partition first→ then brush the firmware→ and wait patiently for 5 minutes", and it can basically be revived in place without the need for chip detachment and programming. I wish you all to light up once and stay away from bricks!

Autumn colors are...Reply

#16

Stuck on the startup page after flashing U-Boot is really frustrating, especially the dead loop cannot enter the system. It is recommended to check the information before scanning to confirm whether the partition and image are correct to avoid similar problems.

3 个月前

The white hair is...Reply

#15

Stuck on the startup page after flashing U-Boot is really annoying, but pressing a space to get into the Breed command line is key. Static IP and tftpd32 configurations should also be paid attention to, otherwise it will be in vain.

#14

The card startup page is really annoying after swiping U-Boot, it is recommended to confirm the partition and firmware location first to avoid writing the wrong place. Manual operation requires caution, otherwise it is easy to enter a dead loop.

Small bridge flow...Reply

#13

Swiping U-Boot stuck on the startup page is indeed a headache, but following the steps is still saving. Dismantling the device, connecting TTL, and setting up static IP are cumbersome steps, but they are key. I hope more people can pay attention to backup and verification before flashing to avoid falling into a dead loop.

Dream chaserReply

#12

The card startup page after swiping U-Boot is indeed a headache, obviously the steps are correct but there is always a problem, it is recommended to check more information before swiping to avoid stepping on the pit.

Rise like the pho...Reply

#11

After flashing U-Boot, the startup page is really crashing, and manual operation is prone to errors. It is recommended that novices first understand the partition and file location to avoid flashing repeatedly.

#10

After swiping U-Boot, the card startup page is really a headache, pressing the space to enter Breed is the key, static IP and tftpd32 can be used together to greatly improve the success rate of brick rescue, and you should be careful to avoid secondary errors when operating.

Night crawlerReply

After swiping U-Boot, the startup page is indeed a headache, be sure to confirm the partition and file path before operation, otherwise it is easy to fall into a dead loop. It is recommended to back up the original firmware first to avoid secondary damage.

4 个月前

BookwormReply

After swiping U-Boot, the card startup page is really pitted, and manual operation is prone to errors. It is recommended that novices understand the process first, confirm the partition and file location, and avoid repeated tossing. Remember to set up serial ports and static IP to save bricks smoothly.

Contentment is al...Reply

Stuck on the startup page after flashing U-Boot is really a headache, especially since the dead loop can't get into the system. However, if you follow the steps, there is still a chance to save it, and the key is to find the problem in time.

Red dust infatuationReply

The stuck splash page after swiping U-Boot is really maddening, especially since the dead loop can't get into the system. Pressing the space to enter Breed is key, but many people may ignore the static IP settings, resulting in brick rescue failures. You have to follow the steps carefully to avoid stepping on the pit again.

Spring is slow an...Reply

The card startup page after swiping U-Boot is really a headache, and manual operation is prone to errors. It is recommended that novices operate with caution and back up the original firmware to avoid repeated pitfalls.

Autumn windReply

After swiping U-Boot, getting stuck on the startup page is really crashing, it is recommended that novices operate with caution, refer to the tutorial more, and avoid entering a dead loop.

Wait for the flow...Reply

It is indeed a headache to get stuck on the startup page after swiping U-Boot, but there is still a solution by following the steps. The key is to disassemble the machine to connect TTL and set a static IP, the key is to confirm whether the partition is correct, otherwise it is easy to fall into a dead loop. Keep trying, and you can always save the equipment.

His eyebrows and ...Reply

Stuck on the startup page after swiping U-Boot is a real headache, especially if you can't see progress after repeated reboots. However, if you follow the steps in the text, there is still a chance to save the device, the key is patience and the right method.

Luban route stuck on the boot page after swiping U-Boot? A brick-saving note will bring you back to life in place

1. Fault phenomenon

2. The reason for 90% of the crater

3. Necessary steps before saving bricks

4. The three-step method of resurrection in place

STEP-1 Confirm the partition

STEP-2 Reflashing the firmware

STEP-3 Validation Startup

5. If you still return to the U-Boot page

6. Summary

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Luban route stuck on the boot page after swiping U-Boot? A brick-saving note will bring you back to life in place

1. Fault phenomenon

2. The reason for 90% of the crater

3. Necessary steps before saving bricks

4. The three-step method of resurrection in place

STEP-1 Confirm the partition

STEP-2 Reflashing the firmware

STEP-3 Validation Startup

5. If you still return to the U-Boot page

6. Summary

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