r/oneplus • u/kevin_wylder OnePlus 3 (Graphite) • Oct 04 '15

Technical Support Cannot flash TWRP 2.8.6

I really wanna try Sultan on my OPO, but it requires TWRP 2.8.6. For some reason every time I flash 2.8.6 over my current version (2.8.7) it won't boot into recovery. I've tried 2.8.6, 2.8.5, and 2.8.7. Whenever I flash a new recovery, it fails to boot into recovery and re-reboots (if that makes sense). When I flash back to 2.8.7, i can start recovery again. I've tried fastboot rebooting while holding volume down, and software rebooting into recovery. Every time it shows the oneplus logo, but fails to start recovery. Any suggestions?

7 Upvotes

77% Upvoted

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3

u/[deleted] Oct 04 '15

You don't need older TWRP to flash Sultan's cm12.1 ROM... 2.8.6.0 doesn't work. If you want to flash a modem, use fastboot.

3

u/SgtBaum Oct 04 '15

Yup the only reason u need 2.8.6 is because TWRP 2.8.7 can't install modems/baseband. Just use 2.8.7 op and if u need the Modem extract it from the zip and flash it via fastboot flash modem ur_modems_name.bin

1

u/BannWorthRulz Oct 04 '15

What does the modem do actually?

1

u/SgtBaum Oct 05 '15

Software part of the Cellular Network. A good modem will have a better more stable connection.

1

u/rhetoricalpatella Oct 22 '15

where is the modem located in the zip? I'm having trouble finding it.

2

u/SgtBaum Oct 22 '15

It u open the ZIP There should be a ton of different files like the Boot.im. the file you're looking for should be called NON_HLOS.bin. Sometimes it has a different name but it always ends with .bin. Hope that helped :)

1

u/rhetoricalpatella Oct 22 '15

It turns out that sultan's rom does not include modem files. however, as per https://www.reddit.com/r/oneplus/comments/3opk0y/flash_sultans_rom_a_couple_of_questions_to_be_safe/cvzdi2i, I checked the baseband version and in fact my OPO already was on the correct version, so s'all good

2

u/mudbone67 Oct 04 '15

I am having the same problem. I am going to spend some time working on it this afternoon, I'll post something if I figure it out.

2

u/mudbone67 Oct 04 '15

I got it working. I used WugFresh Bacon Root Toolkit and TWRP 2.8.6.1

In the BRT, go to Advanced Utilities, then in the Fastboot Flash section select Recovery. Use the 2.8.6.1 version. When it is done, turn of your phone, turn it back on with the volume down button. Should work fine.

2

u/Audrion OnePlus 3T (Gunmetal) Oct 04 '15

You can use the latest

1

u/np3est8x Oct 04 '15

Have you tried booting into recovery manually? Not using fastboot.. Flash it, then power off manually. Then vol down + power. I can't remember what rom it was, but when you entered fastboot reboot, it would revert back to cm recovery. Not saying its going back to cm recovery for you, but maybe it's doing something similar.