Bootloop after flashing vendor_boot.img

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Bootloop after flashing vendor_boot.img

Bootloop after flashing vendor_boot.img

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davidako
Newbie

4

10-01-2025, 09:01 PM

#1

I've got a Yestel X2 (Unisoc T605) which is probably the equivalent of the Teclast T50. I flashed the vendor_boot.img thinking I can get TWRP on there and I've hit a bootloop. Note, the bootloader is unlocked right now.

I tried booting to fastboot or recovery to no avail.

Whenever I try to use the SPD tool to reflash the correct .pac, I get a UART Write error. As soon as I plug the tablet, I get a descriptor USB error and only when I press Power + Vol Down, the SPD tool recognizes it and does a baud sync and then i get a UART write error.

IS the issue with my driver or the tablet itself?

justshez
Intern

2,363

13-01-2025, 11:51 AM

#2

(10-01-2025, 09:01 PM)davidako I've got a Yestel X2 (Unisoc T605) which is probably the equivalent of the Teclast T50. I flashed the vendor_boot.img thinking I can get TWRP on there and I've hit a bootloop. Note, the bootloader is unlocked right now.

I tried booting to fastboot or recovery to no avail.

Whenever I try to use the SPD tool to reflash the correct .pac, I get a UART Write error. As soon as I plug the tablet, I get a descriptor USB error and only when I press Power + Vol Down, the SPD tool recognizes it and does a baud sync and then i get a UART write error.

IS the issue with my driver or the tablet itself?

Have you tried to use redearch download tool to flash it, if so, which version?

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davidako
Newbie

4

13-01-2025, 03:34 PM

#3

Thanks for your reply.

Yes, I've tried the researchDownlaod tool version 27.24.2301 and it says Change Baud for 8 seconds and then i get a UART send error.

Do i need to select specific FileIDs or change anything in the settings?

justshez
Intern

2,363

14-01-2025, 12:06 PM

#4

(13-01-2025, 03:34 PM)davidako Thanks for your reply.

Yes, I've tried the researchDownlaod tool version 27.24.2301 and it says Change Baud for 8 seconds and then i get a UART send error.

Do i need to select specific FileIDs or change anything in the settings?

Refer to https://www.hovatek.com/forum/thread-4870.html

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maxpayne
Intern

4,059

16-01-2025, 11:23 AM

#5

(10-01-2025, 09:01 PM)davidako ..
IS the issue with my driver or the tablet itself?

Your model probably required you to sign the vendor_boot before flash.
How certain are you that the pac file is compatible? Have you ever flashed it? If not, I suggest a backup first.
Try using a different USB cable or port on your PC.
Once Research Download tool is ready, hold only the volume decrease button (while its in a bootloop) then connect to PC

This post was last modified: 16-01-2025, 11:23 AM by maxpayne.

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