<![CDATA[Black screen after failed install.]]>Hi all !
After successfully unlocking the boot loader, I used the installer to flash my tablet TB-X306F.
It stalled somewhere in the process.
It did not reboot.
The screen is the BLACK screen of death.
It does not power on no matter how I tried with volume down + power button, or volume up, or even both up + down + power.
I did the same install successfully with my other twin same exact tablet.
Any help more than welcome.
Peace !

]]>https://forums.ubports.com/topic/12236/black-screen-after-failed-install.RSS for NodeWed, 17 Jun 2026 06:59:32 GMTSat, 02 May 2026 21:47:08 GMT60<![CDATA[Reply to Black screen after failed install. on Sat, 16 May 2026 19:21:05 GMT]]>

@E-Z-Tux said:

The Lenovo fix tool needs the tablet to be turned on

The Software tool requires the tablet to be switched off when recovering using serial number.

]]>https://forums.ubports.com/post/95761https://forums.ubports.com/post/95761Sat, 16 May 2026 19:21:05 GMT<![CDATA[Reply to Black screen after failed install. on Sat, 16 May 2026 16:52:17 GMT]]>@ChromiumOS-Guy Thanks, I will try this later as I have many other things to do.
The Lenovo fix tool needs the tablet to be turned on, and it just refuses to turn on.
Those other tools seem to be able to turn it on AFTER connecting the USB cable.
It is not urgent as I have the twin sister tablet running UT smoothly.
Also my Toshiba Ideapad can morph into a tablet and is running Debian 13 like my Tower.

]]>https://forums.ubports.com/post/95759https://forums.ubports.com/post/95759Sat, 16 May 2026 16:52:17 GMT<![CDATA[Reply to Black screen after failed install. on Fri, 08 May 2026 11:40:42 GMT]]>@E-Z-Tux idk the chip manufacturer for this tablet but research this:
if Mediatek: bootrom bypass & sp flash tool
if Qualcomm: EDL mode & Download tool

]]>https://forums.ubports.com/post/95498https://forums.ubports.com/post/95498Fri, 08 May 2026 11:40:42 GMT<![CDATA[Reply to Black screen after failed install. on Thu, 07 May 2026 23:10:12 GMT]]>@MrT10001 Thanks, that's what I tried first but the tool needs the tablet to be turned on, and It just don't do it.
I might just end up with all spare parts for my working same model tablet.
Again, thank you for taking the time to reply, etc...

@MrT10001 I will try again tomorrow.

]]>https://forums.ubports.com/post/95494https://forums.ubports.com/post/95494Thu, 07 May 2026 23:10:12 GMT<![CDATA[Reply to Black screen after failed install. on Thu, 07 May 2026 15:09:56 GMT]]>@E-Z-Tux You don't need to power up the device. You log in to the software fix tool with a Lenovo account or a Google account. Select Tablets. Select use the serial number to recover. Enter the serial number of the device. Download the ROM. Ensure the tablet is powered off. Follow the onscreen instructions to recover the device, which involves holding volume up and volume down and plugging in the USB cable plugged into the PC when told to do so. Then leave the device alone till it reboots.

]]>https://forums.ubports.com/post/95482https://forums.ubports.com/post/95482Thu, 07 May 2026 15:09:56 GMT<![CDATA[Reply to Black screen after failed install. on Thu, 07 May 2026 14:49:14 GMT]]>@MrT10001 Thanks, that's what I tried first but the tool needs the tablet to be turned on, and It just don't do it.
I might just end up with all spare parts for my working same model tablet.
Again, thank you for taking the time to reply, etc...

]]>https://forums.ubports.com/post/95481https://forums.ubports.com/post/95481Thu, 07 May 2026 14:49:14 GMT<![CDATA[Reply to Black screen after failed install. on Thu, 07 May 2026 12:56:26 GMT]]>@E-Z-Tux You don't need to have USB debugging enabled. If you have the serial number of the device (sticker on back of tablet or on box) you can recover to Android.

]]>https://forums.ubports.com/post/95479https://forums.ubports.com/post/95479Thu, 07 May 2026 12:56:26 GMT<![CDATA[Reply to Black screen after failed install. on Thu, 07 May 2026 10:41:40 GMT]]>@MrT10001 It did not work, the tool needs the tablet to be turned on and allow USB debugging.
I downloaded the service manual, and will do open heart CPU surgery later on...

]]>https://forums.ubports.com/post/95477https://forums.ubports.com/post/95477Thu, 07 May 2026 10:41:40 GMT<![CDATA[Reply to Black screen after failed install. on Mon, 04 May 2026 21:36:58 GMT]]>@MrT10001 Thank you, I will try the Lenovo fixer upper on my wife's laptop tomorrow.

]]>https://forums.ubports.com/post/95406https://forums.ubports.com/post/95406Mon, 04 May 2026 21:36:58 GMT<![CDATA[Reply to Black screen after failed install. on Mon, 04 May 2026 07:56:28 GMT]]>@E-Z-Tux All is not lost. You need to charge the device up. Put it on charge for a day. If it fails to boot after that then you can use the Lenovo Software Fix Tool to recover Android to the device (requires a Windows PC).

]]>https://forums.ubports.com/post/95379https://forums.ubports.com/post/95379Mon, 04 May 2026 07:56:28 GMT