Telekom Puls (alcatel-ttab)

Features
Flashing	Partial
USB Networking	Works
Internal storage	Broken
SD card	No data
Battery	No data
Screen	Works
Touchscreen	No data
Multimedia
3D Acceleration	No data
Audio	No data
Camera	No data
Connectivity
WiFi	No data
Bluetooth	No data
GPS	No data
NFC	No data
Modem
Calls	No data
SMS	No data
Mobile data	No data
Miscellaneous
FDE	No data
USB OTG	No data
Sensors
Accelerometer	No data
Magnetometer	No data
Ambient Light	No data
Proximity	No data
Hall Effect	No data
Barometer	No data
Power Sensor	No data

Alcatel Telekom Puls
	; Telekom Puls failing to find the root partition
Manufacturer	Alcatel
Name	Telekom Puls
Codename	alcatel-ttab
Model	N/A
Released	2015
Type	tablet
Hardware
Chipset	MediaTek MT8127
CPU	4x 1.3 GHz ARM Cortex-A7
GPU	ARM Mali-450 MP4
Display	1280 x 800 IPS
Storage	16 GB
Memory	1 GB
Architecture	armv7
Software
Original software	Android
Original version	6.0
postmarketOS
Category	testing
Pre-built images	no
postmarketOS kernel	3.10.108

Contributors

504TimeOut

Users owning this device

504TimeOut

How to enter flash mode

Power off the device, hold Volume Up + Power and wait for a menu to appear, if needed select fastboot mode.
Use adb reboot bootloader.

Installation

Using pmbootstrap

After you entered fastboot mode, use fastboot oem unlock to unlock and confirm on the device.
Install TWRP with fastboot flash recovery twrp.img
pmbootstrap init -> select alcatel as vendor and ttab as codename.
Proceed with installation like this: pmbootstrap install --android-recovery-zip. Note that --recovery-install-partition does not seem to have an impact on wether or not the root partition can be found.
Boot into recovery. Either through Vol Up + Power and selecting recovery mode as option or through fastboot after flashing fastboot reboot recovery
Select the sideload feature in TWRP and sideload the recovery zip adb sideload pmos-alcatel-ttab.zip

Issues

Unknown chunk type

When you try to flash via pmbootstrap flasher flash_rootfs, this will most likely result in

Sending sparse 'userdata' 1/8 (127446 KB)          OKAY [  3.490s]
Writing 'userdata'                                 FAILED (remote: 'Unknown chunk type')
fastboot: error: Command failed

I don't know why. It "works" when using the recovery.zip.

Root Partition

The device tries to boot but is unable to find the root partition. At least on internal storage. ~~I have yet to try a SD-Card.~~ The SD-Card fails, but not in the same way. Here, it tries to load, the screen turns black and the tablet is off.

Additional Notes

As of now (April 2025), the Telekom Puls is not able to find the root partition. If plugged into a Computer, a USB-Network connection will be established and the device can be accessed via telnet like this telnet 172.16.42.1
The back of the Telekom Puls has Text printed on the back which includes 'Telekom Puls' and right after that 'Alcatel OneTouch', which gives reason to suspect it's based on one. An Alcatel OneTouch which looks similar to the Telekom Puls and is supported by postmarketOS does not seem to exist.