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[Release] Root the Palm phone

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By deadman96385, Retired Forum Moderator / Recognized Developer on 17th December 2019, 09:15 PM
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28th December 2019, 04:00 PM |#21  
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Quote:
Originally Posted by snoopy20

Which Windows version are people using? I've tried W10 and also W7 through a virtualbox but with the above errors.

W10 works fine for me
28th December 2019, 05:21 PM |#22  
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You mean W10 works fine "for me".

It doesn't in my case.
29th December 2019, 07:31 PM |#23  
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Quote:
Originally Posted by snoopy20

It doesn't in my case.

check SUGAR+QCT_SP+v12.2.3
29th December 2019, 10:36 PM |#24  
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OK one step closer, the 5002 has gone. Thanks!

I'm now stuck on 74% with no further download or action. Has sat there for an hour.

---------- Post added at 09:36 PM ---------- Previous post was at 09:36 PM ----------

OK one step closer, the 5002 has gone. Thanks!

I'm now stuck on 74% with no further download or action. Has sat there for an hour.
29th December 2019, 11:16 PM |#25  
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Deleted the file it specifies in the status bar, it redownloaded it but again stuck on 74%.

Edit - it moved after an hour. Now done & testing!
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30th December 2019, 05:52 AM |#26  
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Quote:
Originally Posted by snoopy20

Now done & testing!

I have 1AMD firmware yesterday from FOTA.
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File Type: txt buildprop.txt - [Click for QR Code] (4.3 KB, 16 views)
File Type: txt buildprop1.txt - [Click for QR Code] (7.9 KB, 10 views)
30th December 2019, 10:56 AM |#27  
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WARNING - 2AGG, Oct 1st 2019

Confirmed

**Breaks APN access (mobile data) for Three network (and others?) in the UK **.

Possibly a bug or a restrictive "feature" to lock to Verizon. Calls & txt's will still work. User doesn't have access to set APN's manually.
30th December 2019, 02:20 PM |#28  
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Quote:
Originally Posted by 1806

I have 1AMD firmware yesterday from FOTA.

Can you dump the /vendor/etc/build.prop etc, I'll compare to that on the 2AGG and see if there's something obvious added. At least with having root I should be able to undo whatever they've done, assuming I can find it.

---------- Post added at 01:20 PM ---------- Previous post was at 01:17 PM ----------

Quote:
Originally Posted by xswxm

Tried flash pvg100e over pvg100, it will stuck at the beginning and the program won't flash.

Same here, for pvg100c as well. There must be a check to see what version is currently installed.

It might be possible to change the /vendor/etc/build.prop values to 'pvg100e' depending on what the Sugar program is checking? If it didn't work though it could potentially brick the device as Sugar wouldn't allow going back to pvg100. Risky.
30th December 2019, 03:18 PM |#29  
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30th December 2019, 04:28 PM |#30  
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Also spotted in /system/build.prop

# set cutoff voltage to 3200mV
ro.cutoff_voltage_mv=3200
...
#set cutoff voltage to 3400mV
ro.cutoff_voltage_mv=3400

The 3200 should be fine and give better battery mileage.
31st December 2019, 10:02 PM |#31  
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Quote:
Originally Posted by 1806

I have 1AMD firmware yesterday from FOTA.

I HAVE A COPY OF THE NON-VERIZON U.S. VERSION OF THE FIRMWARE! IT DOESN'T HAVE ANY BLOATWARE OR OTHER STUPID VERIZON RESTRICTIONS! I WANT TO SHARE IT HERE, BUT I DON'T KNOW HOW TO EXTRACT IT!

I can't root it because I don't have a windows computer to use Sugar on. And for some reason, I can't get it to work in Wine on my Mac. Any ideas? I really want to pull this firmware. It's WAY better than 1AMD.

---------- Post added at 09:02 PM ---------- Previous post was at 08:58 PM ----------

Quote:
Originally Posted by terence.tan

No need for empirical proof, I did the analysis here.

The difference is: the early part of boot is Qualcomm code using Qualcomm security. These are the "pbl", "sbl/edl" and "aboot/fastboot" programs (and also "modem", "tz" and other bits). These were the parts that I was looking at in the link above.

When "aboot" completes, it hands over to the late part of boot, which is Android code using Google security. These are the "boot.img/Linux kernel" programs, "recovery", "system", "vendor", "data", etc. They use a different security model. That's what this root method targets. You are correct when you say "Maybe we are just so lucky that boot.img is not checked as rigorously".

It does imply that you can mix the PVG100 Qualcomm partitions for "early boot" with the PVG100E Android partitions for "late boot" and vice-versa. But someone with motivation needs to test this... (No, you can't unlock cellular bands this way; the "modem" partition is from Qualcomm and must match your hardware.)

A good diagram is below; Source (and explanation): https://blog.quarkslab.com/analysis-...ot-chains.html -- I recommend studying this article.

Flowchart of the Qualcomm secure boot chain



This should work. Keep in mind that whilst 1AMD seems to be fine, future versions may (permanently) close the vulnerabilities that allow you to get root, modify system partitions or use the current version of SugarQCT. I don't think this will happen but we should all keep the possibility in mind.

I don't know if they will send out any more updates for this phone....since rumor has it they are currently working on the next model!
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