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dimanche 20 septembre 2015

Solve Display init failures by Android update?



Dear Experts,

Months ago my 2y old XZU on 4.4.4 (6833, towel rooted, locked, CWM recovery) started to fail on init of LCD, when coming out of standby. LCD init not only fails when device gets waked up by "power" button, but also when power is applied (Dock connector or USB). So I guess in fact it is a firmware issue (not a defective power button or the like).

It gets worse and worse; when device is warm it sometimes needs 30 or more off/on cycles.

When LCD init fails, the screen either stays black (only backlight) or colored lines show up shortly and fade away. But in fact the device is running - only LCD is not working.
But when init is successful, the XZU can run nicely for hours (as navi).

I hope that a android FW update might help!?

Unfortunately OTA doesn't seem to work on routed devices even with still locked boot loader.
Is there a way to update directly to 5.1.1 available now? Is it possible to update in two steps?

I would not mind to loose root, but loosing the possibility to write to external SDCARD!

Any help/ideas? THANKS A LOT!

Thomas



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