Quote:
Originally Posted by datanoise
That has been my feeling too. What I don't understand is that a couple of weeks ago I have been able to downgrade a (new & coming from the same country) pw3 with no trouble using 5.7.4. Sadly I lost the piece of paper where I noted the firmware revision that it was running on before the downgrade.
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Much more interesting would not only be the detailed build info (this 10 digit decimal number in brackets), but also the
first 10 (or even better 12)
digits of the serial number. Taking the KT3 I'm just using as an example: "G000 K905 72xx xxxx". I suppose that there are very different hardware revisions of the same basic type; especially when it comes to the best and longest selling PW3. I assume they might be distinguished from the digits 6 to 10; here "05 72".
Let me sum my experiences up:
1) The first PW3 I jailbroke in End of 2016 on behalf of a friend of mine was a remnant device, running out of the box a relatively old firmware as for the date of purchase (5.8.1 or something like that, while 5.8.7 was the OTA version at that time). This device could be downgraded without any problems to 5.7.4 factory. After jailbreaking, I updated to 5.8.7.0.1 user firmware; and a few weeks ago the owner decided to update to 5.8.11.
2) Another PW3 bought in April 2017 (out of the box 5.8.7 - i.e. the last directly downgradeable version...) made a lot of problems: It literally took about over a hour to finish the reboot to the factory 5.7.4 version. But after a bit of panicking, the jailbreak was possible. Unfortunately, I don't have this device handy right now (I only use it as a replacement, my "daily burner" is a KT3), but I can give its serial number today in the late evening MET.
3) A PW3 of a friend of mine bought in Dec. 2017 and running fw 5.8.9.0.1 out of the box, got bricked using the 5.7.4 factory downgrade.
For the replacement device he got - fortunately also running 5.8.9.0.1
- I already had the 5.8.9.0.1 factory version at hand (thanks knc1!), and using this version: No problems at all, downgrade (or better in this case: sidegrade) to factory version was finished after around 15 minutes only. Then updated to 5.8.11 user fw and added the OTA blocker dir...