Hacking Question bricked switch

[Andre993]

hi guys i have a big problem to my switch, i restore my nand to 5.1.0, but switch wont start,i haven't burned efuse,i check with bricmii and i have 6burned efuse but restore isn't success and i look at this guide :https://gbatemp.net/threads/switch-wont-boot-after-restore-nand-but-can-run-rcm.540019/ when i insert the boot0/boot1 fron 8.0.1 this replace myboot0 and boot1 but isn't my fw and switch has a blue screen i checked again with bricmii and my burned efuse is 9, i try to downgrade with manual choji, but when i extract the biskey didn't work because nand and boot isn't same, now i have a biskey it's work from hekate 5.0 but i follow this guide https://gbatemp.net/threads/how-to-...nofficially-without-burning-any-fuses.507461/ and nothing appear, i don't know why, the test from biskey it's ok i derive the biskey from sdsetup, because biskeydump didn't work and also briccmii tell me an error: https://imgur.com/oUad7Bd
the question is: there is any way to upgrade swtich to 8.0.1 with manual choji and not chojiNX? or a method to launch .nro from exemple hekate? because i don't enter to CFW and OFW i hope to have been as clear as possible

thanks so much

 

[Hayato213]

What firmware were you on before restoring to 5.1.0, was the 5.1.0 nand backup restored with correct boot0/boot1?

You can try loading lockpick_rcm from Hekate menu to get your key and use that with Choidujour to rebuild your nand.

 

[Andre993]

What firmware were you on before restoring to 5.1.0, was the 5.1.0 nand backup restored with correct boot0/boot1?

You can try loading lockpick_rcm from Hekate menu to get your key and use that with Choidujour to rebuild your nand.

i have a 6.2 update from choidujourNX and NEVER start OFW, yeah i restore the boot0/1 i have 3 backup to my switch, 1 on hdd 1 on cloud and 1 in external hdd i try all 3 backup

lockprick start and tell me unknow pkg1 version, i also try manual choidujour and never happening, i derive my biskey from sdsetup with SKBKEY and TSECKEY dumped from hekate

 

[Hayato213]

i have a 6.2 update from choidujourNX and NEVER start OFW, yeah i restore the boot0/1 i have 3 backup to my switch, 1 on hdd 1 on cloud and 1 in external hdd i try all 3 backup

lockprick start and tell me unknow pkg1 version, i also try manual choidujour and never happening, i derive my biskey from sdsetup with SKBKEY and TSECKEY dumped from hekate

lockpick require atmosphere sept file, usually it doesn't boot ofw because they boot0/1 and the firmware installed doesn't match, if you don't have a matching pair and no keys that Choidujour can use you are screwed.

 

[Andre993]

lockpick require atmosphere sept file, usually it doesn't boot ofw because they boot0/1 and the firmware installed doesn't match, if you don't have a matching pair and no keys that Choidujour can use you are screwed.

i have a sept file, and yes i have the key, but i don't know when try manual choi didn't work, the biskey test is ok but when i arrive in this step:

1. Return to the main menu, then select ‘Launch > FS_XXX-exfat_nocmac_nogc’ where XXX is the firmware version you downgraded to.
2. Make sure your system successfully boots

didn't work.

when i try to substitute the boot0 and boot1 from mattytrog package i change 2 boot from 8.0.1 fw and now i have 9 burned efuse, for this i ask a method to upgrade manually to this version

 

[Hayato213]

https://switch.homebrew.guide/usingcfw/manualchoiupgrade#step-14-first-launch-failed

Try step 14.

 

[Andre993]

https://switch.homebrew.guide/usingcfw/manualchoiupgrade#step-14-first-launch-failed

Try step 14.

i try now, nothing, when launch atmosphere give me this errror

fatal error:[NXBOOT] key derivation failed

EDIT: now lockpick give me a
keyblob 0 corrupt
keyblob 1 corrupt
keyblob 2 corrupt
keyblob 3 corrupt
keyblob 4 corrupt
keyblob 5 corrupt

failed to decrypt package2

 

[DBOA]

i try now, nothing, when launch atmosphere give me this errror

fatal error:[NXBOOT] key derivation failed

EDIT: now lockpick give me a
keyblob 0 corrupt
keyblob 1 corrupt
keyblob 2 corrupt
keyblob 3 corrupt
keyblob 4 corrupt
keyblob 5 corrupt

failed to decrypt package2

I'm having the same problem, were you able to fix it?