PW2 Help Unbrick

[Emulatore]

My friend have a PW2 stop on tree, so i used serial to figure out if can be unbricked, when i try to follow the guide for this guide
https://gist.github.com/ramast/58633...on-update-file
to enter fastboot i got follow output:

In:    serial
Out:   serial
Err:   serial
POST done in 0 ms
Battery voltage: 3993 mV

running cmd: fastboot 
Entering fastboot mode...
USB speed: HIGH
Connected to USB host!
USB speed: HIGH
Connected to USB host!
mmc write failed
Error! Couldn't write NV variables. (-18)

Warning: fail to get ext csd for MMC!
idme_update_var ERROR: couldn't switch back to user partition

and when i try to go in diag mode

setting 'bootmode' to 'diags'...
setvar:bootmode diags FAILED (remote: update error)
finished. total time: 0.009s

is it mean the mmc is failed? is it going to be a screen to sell ?

thanks for any reply or

[WaseemAlkurdi]

Originally Posted by Emulatore

My friend have a PW2 stop on tree, so i used serial to figure out if can be unbricked, when i try to follow the guide for this guide
https://gist.github.com/ramast/58633...on-update-file
to enter fastboot i got follow output:

In:    serial
Out:   serial
Err:   serial
POST done in 0 ms
Battery voltage: 3993 mV

running cmd: fastboot 
Entering fastboot mode...
USB speed: HIGH
Connected to USB host!
USB speed: HIGH
Connected to USB host!
mmc write failed
Error! Couldn't write NV variables. (-18)

Warning: fail to get ext csd for MMC!
idme_update_var ERROR: couldn't switch back to user partition

and when i try to go in diag mode

setting 'bootmode' to 'diags'...
setvar:bootmode diags FAILED (remote: update error)
finished. total time: 0.009s

is it mean the mmc is failed? is it going to be a screen to sell ?

thanks for any reply or

An eMMC costs under $10 ... you could replace it instead.
(Source for both statements: https://www.mobileread.com/forums/sh...d.php?t=271750)
But replacement requires a hot air station, and beware, it's not trivial. It's better to get the spare part and let a friend with SMD reworking experience do it.

[Emulatore]

Originally Posted by WaseemAlkurdi

An eMMC costs under $10 ... you could replace it instead.
(Source for both statements: https://www.mobileread.com/forums/sh...d.php?t=271750)
But replacement requires a hot air station, and beware, it's not trivial. It's better to get the spare part and let a friend with SMD reworking experience do it.

Thanks for replace idea, could a simple reflow solve the eMMC problem ?

[WaseemAlkurdi]

Originally Posted by Emulatore

Thanks for replace idea, could a simple reflow solve the eMMC problem ?

If it's cracked solder, then yeah, a reflow might fix it, especially if the Kindle suffered a recent drop to a hard floor that might've caused a minuscule crack in the solder.

You can also desolder the eMMC and test it using an ordinary SD card reader. (like this).

But since you are considering this solution, just buy a new eMMC. It's not really expensive. At least, it's better than selling it off.
You can even get one from a Kindle with a cracked screen. But since they are cheap online, it might be even cheaper to simply buy an eMMC.
The part numbers are in the thread I linked to, and you can use the pictures in this blog post:https://ripitapart.com/2018/02/25/em...-emmc-storage/

Edit: Contrary to what's known around here, eMMC replacements don't have to be the same exact make and model ... not even the same ball-out is required.