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So ... in case you want to relive the good old days with the Pro1 (SD835 only!), LineageOS 16.0 just got another update. At https://findus.zwergenschaenke.net/~puma/linux.html#lineagepro1 fetch the ROM dated 202304024. It gives you backported ASB patches up to 5 April 2023. There are no other changes compared to last month's release. Refer to my tarball of localmods for the full list of code changes with respect to upstream LineageOS 16.0. Have a lot of fun.

OK, fixed it. Prawn-X is back alive! 🥳 Turned out the battery was completely flat. After disassembling, I measured 0.00 V between the pins! I do not know how that happened, maybe I did accidentally leave the device on when putting it away. Still, I'm pretty sure the battery should never discharge to 0 V in any design scenario, as the device should automatically switch itself off before. I guess this is related to the "battery protection bug" f(x)tec keep mentioning in their updates ... Anyway, I was able to charge the battery to ~50% (3.9 V) using a laboratory power supply. After tha

As you can see above, I got my quote and sent in my address so I could get an invoice (they needed the address to figure in shipping on the invoice) on April 5th and silence ever since. @Casey Come on, guys, I'm trying to give you money! 😅 Ticket #10917

From @npjohnsonon XDA: Thanks to the great Lineage team we have supporting us! 👍

God I hope I never have to do this job. If the LOS devs re-establish the ability of the 1x to charge offline, then hopefully I never will.

So ... I recharged my Pro1-X battery using a laboratory power supply after it had depleted completely, probably due to the "battery protection bug" mentioned by f(x)tec in their updates. It turned out that the most difficult part in this is getting to the battery. The Pro1-X is not nearly as "serviceable" as I expected. Separating the different parts of the body is not as easy as the instructional videos suggest. Also, the battery itself is glued into the phone, which makes its removal a scaring endeavour. Note that removing the battery from the phone is not strictly necessary for re-char

I Manged to install. In the end i cannot say waht the exact problem is. I did two maijor things. I used the WSL 2 to use linux with adb while forwarding the usb device to WSL. => this resulted in a bluescreen. However it might have scared windows into functioning well. More likly is that i uninstalled all dirvers regard adb in the device manager. And reinstalled using the usb driver coming with the andriod studio.

As a temporary fix I found the app Partial Screen was useful to disable the horizontal line of ghost touches I was having

(lineage-20.0-20230424-nightly-pro1-signed.zip on April 5 security patch installed smoothly using adb sideload and MindTheGapps-13.0.0-arm64-20221025_100653)

OTA update 20230424 is live and installed without problems for me.

I think you are on the right path, and will need to go through EDL-mode. If the phone were turned off, the battery of a phone usually last for at the least a year if fully charged, without depleting it self. But if it was in a state where it turned it self off, and then was left for months, it might well be problematic. I do not know if there are any tricks to charge the battery in that state without opening the phone and charging the battery directly, by a circuitry bypassing the charging-logic (do not give the battery 5V directly). Many phones by default comes with a silly mode

In my experience pressing it together causes it to happen more

I confirm that installing Lineage on Pro1-X breaks offline-charging-mode. I had that enabled and working successfully on 2.1.5-GMSless, but never checked after installing LineageOS. I am not on one of the official builds, but on one of the betas from few weeks ago. After reading this, I tried to charge my Pro1-X (shelved for several months) and it seems to be bricked. Upon connecting the charger it briefly blinks red, but then nothing. Previously (with 2.1.5.-GMSless) it would charge (while displaying the "battery screen"). Well ... what to complain about with such a broken device ..