[Q] Bootloop

Sushrut52

Senior Member

Sep 19, 2010

58

6

• May 11, 2014

• #1

I recently tried to downgrade for rooting and cwm recovery.
No matter how many roms i tried (.245,.254,.287),
Nothing happens,I get stuck in bootloop.
When i flash 4.3,it flashes perfectly.
What should i do?

 

joke19

Senior Member

Feb 23, 2012

1,633

248

Xiaomi Redmi Note 7

Samsung Galaxy S21

• May 11, 2014

• #2

U was in the stock recovery after u flash a new rom and made a factory reset? When not make it.

Gesendet von meinem Xperia SP

 

Sushrut52

Senior Member

Sep 19, 2010

58

6

• May 11, 2014

• #3

Sorry.Could you please elaborate?

 

mrhnet

Senior Member

Jan 2, 2012

325

268

• May 11, 2014

• #4

Did you wipe data when flashing the 4.1.2 rom?

 

joke19

Senior Member

Feb 23, 2012

1,633

248

Xiaomi Redmi Note 7

Samsung Galaxy S21

• May 11, 2014

• #5

My talking

Gesendet von meinem Xperia SP

 

Sushrut52

Senior Member

Sep 19, 2010

58

6

• May 12, 2014

• #6

mrhnet said:

Did you wipe data when flashing the 4.1.2 rom?

Click to expand...

Click to collapse

I didn't wipe data.I unticked all wipe partitions in flashtool.

 

mrhnet

Senior Member

Jan 2, 2012

325

268

• May 12, 2014

• #7

Sushrut52 said:

I didn't wipe data.I unticked all wipe partitions in flashtool.

Click to expand...

Click to collapse

That could be the problem. I also tried once 4.3 >> 4.1.2 without wiping data, resulted in bootloop as yours. (But going from .266 to .201 without wiping data worked). You might have to flash with the three check-boxes ticked (wipe data, cache and appslog).

 

• 

Reactions: Rycon33

Sushrut52

Senior Member

Sep 19, 2010

58

6

• May 12, 2014

• #8

But the only reason to downgrade is to backup data using cwm recovery and then root 4.3
By wiping ill lose all my data i.e. drm keys.

 

• 

Reactions: Rycon33

mrhnet

Senior Member

Jan 2, 2012

325

268

• May 12, 2014

• #9

Sushrut52 said:

But the only reason to downgrade is to backup data using cwm recovery and then root 4.3
By wiping ill lose all my data i.e. drm keys.

Click to expand...

Click to collapse

That's the dilemma I also faced Had to start all over again.. You can try "Backup&Restore" app that comes with stock rom. But that didn't work for properly for me

Btw, can backup sms, contacts, etc and app apk's with 'SuperBackup' app. But it won't backup the app data.

Because your BL is locked, have to downgrade to get root and a recovery. If you unlock the BL now, that itself will wipe the data! No way out I think..

Can u think of an alternative?

**Edit - wiping data won't erase drm keys. Unlocking BL will erase it. Before unlocking, you have to backup TA partition to save the drm keys. For that we need root! Again back to the same place.. oh.

 

Last edited: May 12, 2014

Sushrut52

Senior Member

Sep 19, 2010

58

6

• May 12, 2014

• #10

mrhnet said:

That's the dilemma I also faced Had to start all over again.. You can try "Backup&Restore" app that comes with stock rom. But that didn't work for properly for me

Btw, can backup sms, contacts, etc and app apk's with 'SuperBackup' app. But it won't backup the app data.

Because your BL is locked, have to downgrade to get root and a recovery. If you unlock the BL now, that itself will wipe the data! No way out I think..

Can u think of an alternative?

**Edit - wiping data won't erase drm keys. Unlocking BL will erase it. Before unlocking, you have to backup TA partition to save the drm keys. For that we need root! Again back to the same place.. oh.

Click to expand...

Click to collapse

I have to ask something.What will happen if :
I wipe my all data,cache and the third one,will it install 4.1.2,
If it does,i can root 4.1.2 using @DooMLoRD easy rooting toolkit,install cwm and take backup.
Then flash 4.3,root it and restore backup from cwm.
Will it work?

 

Last edited: May 12, 2014

M

mrjraider

Senior Member

Jul 1, 2012

4,402

2,247

• May 12, 2014

• #11

All you can do: Reflash 4.3 without wiping data etc..
Make a backup with the backup app from sony (backup to external SD)
Flash 4.1.2 and wipe everything.....

Boot up and restore backup..

 

Sushrut52

Senior Member

Sep 19, 2010

58

6

• May 12, 2014

• #12

mrjraider said:

All you can do: Reflash 4.3 without wiping data etc..
Make a backup with the backup app from sony (backup to external SD)
Flash 4.1.2 and wipe everything.....

Boot up and restore backup..

Click to expand...

Click to collapse

Thank you.Will try it.