Very Clean System - how do I start now? - TouchPad General

I have really "screwed" up here. I erased everything on my TouchPad. So, how can I add the files I needed in order to get the rest of Android 9?
I have tried several files with TPToolbox (2015-01-08-v42) and did not get anywhere.
So, right now I could use some big help here. Without an OS, I cannot even get TWRP installed.
Thanks ahead for any help and support here.
BTW, I had Dirty Unicorn 8.1 before I erased everything. So I am really looking forward to this new version.

---

What does it show on the moboot menu when the TP is booted?

---

There was nothing, no software or moboot installed. I did finally manage to get TWRP installed (3.1.0.0) and during boot moboot version 0.3.8 shows up as well. So good for the great (really!) news.
But I now have a new problem, when I download load "du_tenderloin-v13.0-20190328-1316-RC.zip" the MD5 value does not match and it fails installation. I have tried 4-5 times on the downloads and still fails the MD5 value. I guess I'll wait till the next RC release or does someone knows where I can get a good release?
BTW- Thank you "HP_TOUCHPAD" for getting back to me. I really appreciate it. And to all the guys on this forum, especially a big thank you to Flintman for all that he has done .

---

How are you installing DU v13?
There is nothing wrong with the file from the site.
Using TWRP 3.1 0-0:
Select the flash zip file.
On the next screen in Options ( uncheck ) Zip signature verification.
The ROM will install with no issues.

---

HP_TOUCHPAD said:
How are you installing DU v13?
There is nothing wrong with the file from the site.
Using TWRP 3.1 0-0:
Select the flash zip file.
On the next screen in Options ( uncheck ) Zip signature verification.
The ROM will install with no issues.
Click to expand...
Click to collapse
_________________________________________________
I downloaded a "fresh" version of du_tenderloin-v13.0-20190328-1316-RC.zip (MD5 still did not match).
I made sure that "Zip signature verification" was unchecked and went ahead and installed it again.
During the installation I get the following error:
Flashing Dirty Unicorns System files...
E1001: Failed to update system image.
Updater process ended with ERROR: 7
Error installing zip file "/external_sd/ttinstall/du_tenderloin-v13.0-20190328-1316-RC.zip"
Updating partition details...
...done
I went ahead and re-boot the unit and it would only show the following:
moboot 0.3.8
boot TWRP
boot webOS Recovery
reboot
shutdown
For some reason I believe that the file is not coming down correctly (?) and because my MD5 does not match is the reason I'm thinking this.
Thanks for the support you are giving me.

---

The MD5 posted it for the 20190328 ROM is:
3fb70d72204ce4e8eef56fb4548930b6
I downloaded the 20190328 ROM and in Ubuntu did a md5sum on the file, the result:
89e32f1c6b5cf6792bf3ac6216c40a26
MD5 does not match.
Installed the ROM in TWRP 3.1. 0-0 after preparing the system for DU v13 as explain on this guide:
HP TOUCHPAD Optimize for Android with Swap Partition and SKZ Kernel_ Flash Files_
From the TWRP installation screen:
Installing zip file '/external_sd/du_tenderloin-v13.0-20190328-1316-RC.zip'
Checking for MD5 file...
Skipping MD5 check: no MD5 file found
Warning: No file_contexts
The ROM finished the installation property
Question:
How was the Android partitions created before installing the DU v13 ROM?
Was the /system partition created of a size of 1.4GB or larger?

---

How was the Android partitions created before installing the DU v13 ROM?
Using "Wipe_All_and_Create_Android_with_Swap_Partition"
Was the /system partition created of a size of 1.4GB or larger? Yes, 1.7GB I believe.
So, I have started over again -
I re-booted and from MOUNT I Selected (checked) Cache, Data, System and Micro SDCard (some were not checked before)
Then I went back to Install and tried again.
Great! This time I get;
Flashing boot image...
script succeeded: result was [1.000000}
Updating partition details...
According the web page - ..."installed the ROM as always, there is nothing else to do..."
I then rebooted - booting into Android - Optimizing app xx of 120
Upon finishing I get the following error "Weather Information Pro...keeps stopping.
Also, I am unable to connect to the Play Store to update the Play Service app,
Showed that Android Play Store was outdated.
Tried to installed "open-gapps-arm-9.0-pico-20190405.zip" but it failed with the following error:
Error Code: 40 - Unmounting /system
My new question is: How do I install open-gapp to get the latest? And does open-gapp also installs
the Play Service app?
Again, thanks for all the help.

---

_dave said:
How was the Android partitions created before installing the DU v13 ROM?
Using "Wipe_All_and_Create_Android_with_Swap_Partition"
Was the /system partition created of a size of 1.4GB or larger? Yes, 1.7GB I believe.
So, I have started over again -
I re-booted and from MOUNT I Selected (checked) Cache, Data, System and Micro SDCard (some were not checked before)
There is no need to mount anything, the ROM will mount everything that it needs when flashing.
Then I went back to Install and tried again.
Great! This time I get;
Flashing boot image...
script succeeded: result was [1.000000}
Updating partition details...
According the web page - ..."installed the ROM as always, there is nothing else to do..."
I then rebooted - booting into Android - Optimizing app xx of 120
The basic ROM needs to be install, the ROM does not provide any Apps.
Why is Android Optimizing app xx of 120?
Did you installed or restore any extra Apps?
Upon finishing I get the following error "Weather Information Pro...keeps stopping.
How was the Weather Information Pro installed?
Also, I am unable to connect to the Play Store to update the Play Service app,
Showed that Android Play Store was outdated.
Did you restore an old version onto DU v13?
Tried to installed "open-gapps-arm-9.0-pico-20190405.zip" but it failed with the following error:
Error Code: 40 - Unmounting /system
My new question is: How do I install open-gapp to get the latest? And does open-gapp also installs
the Play Service app?
The proper way to have a working Tablet:
1. Using the Wipe_ALL_Create_Android_With_Swap ( DU v13, Android Pie needs a swap partition)
2. Reboot
3. Flash the DUv13 ROM and the version of open-gapp and the same time.
The best is to use the Variant Pico, is the basic and allows Play Service to install any Apps.
Click here to download the latest open-gapp
Again, thanks for all the help.
Click to expand...
Click to collapse
You are very welcome !

---

Hi HP_TOUCHPAD, I repeated your last steps (again) and FINALLY FULL SUCCESS!!! OMG - THANK YOU!

---

_dave said:
Hi HP_TOUCHPAD, I repeated your last steps (again) and FINALLY FULL SUCCESS!!! OMG - THANK YOU!
Click to expand...
Click to collapse
Good to know you were able to get your Tablet working. Keep an eye on the DU v13 on here as more enhancement will be posted it. Enjoy your all new again HP TP !