[OnePlus 6 Guides, News, & Discussion] Andy3153:
Oh yea remember how happy I was in the last comment? Kinda bricked it again

I tried to install this ROM, followed all the steps and anything I would do (try to boot, try to boot to twrp, try to boot to twrp with the img file and fastboot) would give me the qualcomm crashdump. So I tried following these steps again, and now some partitions are apparently locked? The error message is 'FAILED (Remote: Critical Partition not allowed)'

Here is what I was doing:

√  root@sparkle  >  fastboot flash aop_a aop.img  🗁 /home/andy3153/…/10.3.6-OnePlus6Oxygen_22.J.48_OTA_048_all_2010042239_c0c1fee2ee-FASTBOOT/images  🗏 262
Sending 'aop_a' (180 KB) OKAY [ 0.011s]
Writing 'aop_a' FAILED (remote: 'Flashing is not allowed for Critical Partitions
')
fastboot: error: Command failed
×  root@sparkle  >  fastboot flash aop_b aop.img  🗁 /home/andy3153/…/10.3.6-OnePlus6Oxygen_22.J.48_OTA_048_all_2010042239_c0c1fee2ee-FASTBOOT/images  🗏 263
Sending 'aop_b' (180 KB) OKAY [ 0.008s]
Writing 'aop_b' FAILED (remote: 'Flashing is not allowed for Critical Partitions
')
fastboot: error: Command failed
×  root@sparkle  >  fastboot flash bluetooth_a bluetooth.img  🗁 /home/andy3153/…/10.3.6-OnePlus6Oxygen_22.J.48_OTA_048_all_2010042239_c0c1fee2ee-FASTBOOT/images  🗏 264
Sending 'bluetooth_a' (748 KB) OKAY [ 0.024s]
Writing 'bluetooth_a' FAILED (remote: 'Flashing is not allowed for Critical Partitions
')
fastboot: error: Command failed
×  root@sparkle  >  fastboot flash bluetooth_b bluetooth.img  🗁 /home/andy3153/…/10.3.6-OnePlus6Oxygen_22.J.48_OTA_048_all_2010042239_c0c1fee2ee-FASTBOOT/images  🗏 265
Sending 'bluetooth_b' (748 KB) OKAY [ 0.028s]
Writing 'bluetooth_b' FAILED (remote: 'Flashing is not allowed for Critical Partitions
')
fastboot: error: Command failed
×  root@sparkle  >  fastboot flash boot_a boot.img  🗁 /home/andy3153/…/10.3.6-OnePlus6Oxygen_22.J.48_OTA_048_all_2010042239_c0c1fee2ee-FASTBOOT/images  🗏 266
Sending 'boot_a' (65536 KB) OKAY [ 1.745s]
Writing 'boot_a' OKAY [ 0.315s]
Finished. Total time: 2.100s
√  root@sparkle  >  fastboot flash boot_b boot.img  🗁 /home/andy3153/…/10.3.6-OnePlus6Oxygen_22.J.48_OTA_048_all_2010042239_c0c1fee2ee-FASTBOOT/images  🗏 267
Sending 'boot_b' (65536 KB) OKAY [ 1.730s]
Writing 'boot_b' fastboot flash dsp_a dsp.imgOKAY [ 0.471s]
Finished. Total time: 2.237s
√  root@sparkle  >  fastboot flash dsp_a dsp.img  🗁 /home/andy3153/…/10.3.6-OnePlus6Oxygen_22.J.48_OTA_048_all_2010042239_c0c1fee2ee-FASTBOOT/images  🗏 268
Sending 'dsp_a' (32768 KB) OKAY [ 0.862s]
Writing 'dsp_a' FAILED (remote: 'Flashing is not allowed for Critical Partitions
')
fastboot: error: Command failed
×  root@sparkle  >  fastboot flash dsp_b dsp.img  🗁 /home/andy3153/…/10.3.6-OnePlus6Oxygen_22.J.48_OTA_048_all_2010042239_c0c1fee2ee-FASTBOOT/images  🗏 269
Sending 'dsp_b' (32768 KB) OKAY [ 0.873s]
Writing 'dsp_b' FAILED (remote: 'Flashing is not allowed for Critical Partitions
')
fastboot: error: Command failed
×  root@sparkle  >  fastboot flash dtbo_a dtbo.img  🗁 /home/andy3153/…/10.3.6-OnePlus6Oxygen_22.J.48_OTA_048_all_2010042239_c0c1fee2ee-FASTBOOT/images  🗏 270
Sending 'dtbo_a' (8192 KB) OKAY [ 0.226s]
Writing 'dtbo_a' OKAY [ 0.076s]
Finished. Total time: 0.309s
√  root@sparkle  >  fastboot flash dtbo_b dtbo.img  🗁 /home/andy3153/…/10.3.6-OnePlus6Oxygen_22.J.48_OTA_048_all_2010042239_c0c1fee2ee-FASTBOOT/images  🗏 271
Sending 'dtbo_b' (8192 KB) OKAY [ 0.228s]
Writing 'dtbo_b' OKAY [ 0.055s]
Finished. Total time: 0.289s
√  root@sparkle  >  fastboot flash fw_4j1ed_a fw_4j1ed.img  🗁 /home/andy3153/…/10.3.6-OnePlus6Oxygen_22.J.48_OTA_048_all_2010042239_c0c1fee2ee-FASTBOOT/images  🗏 272
Sending 'fw_4j1ed_a' (344 KB) OKAY [ 0.010s]
Writing 'fw_4j1ed_a' OKAY [ 0.005s]
Finished. Total time: 0.022s
√  root@sparkle  >  fastboot flash fw_4j1ed_b fw_4j1ed.img  🗁 /home/andy3153/…/10.3.6-OnePlus6Oxygen_22.J.48_OTA_048_all_2010042239_c0c1fee2ee-FASTBOOT/images  🗏 273
Sending 'fw_4j1ed_b' (344 KB) OKAY [ 0.013s]
Writing 'fw_4j1ed_b' OKAY [ 0.003s]
Finished. Total time: 0.023s
√  root@sparkle  >  fastboot flash fw_4u1ea_a fw_4u1ea.img  🗁 /home/andy3153/…/10.3.6-OnePlus6Oxygen_22.J.48_OTA_048_all_2010042239_c0c1fee2ee-FASTBOOT/images  🗏 274
Sending 'fw_4u1ea_a' (344 KB) OKAY [ 0.011s]
Writing 'fw_4u1ea_a' OKAY [ 0.006s]
Finished. Total time: 0.024s
√  root@sparkle  >  fastboot flash fw_4u1ea_b fw_4u1ea.img  🗁 /home/andy3153/…/10.3.6-OnePlus6Oxygen_22.J.48_OTA_048_all_2010042239_c0c1fee2ee-FASTBOOT/images  🗏 275
Sending 'fw_4u1ea_b' (344 KB) OKAY [ 0.012s]
Writing 'fw_4u1ea_b' OKAY [ 0.004s]
Finished. Total time: 0.023s
√  root@sparkle  >  fastboot flash modem_a modem.img  🗁 /home/andy3153/…/10.3.6-OnePlus6Oxygen_22.J.48_OTA_048_all_2010042239_c0c1fee2ee-FASTBOOT/images  🗏 276
Sending 'modem_a' (117764 KB) OKAY [ 3.116s]
Writing 'modem_a' OKAY [ 0.917s]
Finished. Total time: 4.040s
√  root@sparkle  >  fastboot flash modem_b modem.img  🗁 /home/andy3153/…/10.3.6-OnePlus6Oxygen_22.J.48_OTA_048_all_2010042239_c0c1fee2ee-FASTBOOT/images  🗏 277
Sending 'modem_b' (117764 KB) OKAY [ 3.082s]
Writing 'modem_b' OKAY [ 0.651s]
Finished. Total time: 3.740s
√  root@sparkle  >  fastboot flash oem_stanvbk oem_stanvbk.img  🗁 /home/andy3153/…/10.3.6-OnePlus6Oxygen_22.J.48_OTA_048_all_2010042239_c0c1fee2ee-FASTBOOT/images  🗏 278
Sending 'oem_stanvbk' (952 KB) OKAY [ 0.035s]
Writing 'oem_stanvbk' OKAY [ 0.015s]
Finished. Total time: 0.057s
√  root@sparkle  >  fastboot flash qupfw_a qupfw.img  🗁 /home/andy3153/…/10.3.6-OnePlus6Oxygen_22.J.48_OTA_048_all_2010042239_c0c1fee2ee-FASTBOOT/images  🗏 279
Sending 'qupfw_a' (64 KB) OKAY [ 0.007s]
Writing 'qupfw_a' FAILED (remote: 'Flashing is not allowed for Critical Partitions
')
fastboot: error: Command failed
×  root@sparkle  >  fastboot flash qupfw_b qupfw.img  🗁 /home/andy3153/…/10.3.6-OnePlus6Oxygen_22.J.48_OTA_048_all_2010042239_c0c1fee2ee-FASTBOOT/images  🗏 280
Sending 'qupfw_b' (64 KB) OKAY [ 0.007s]
Writing 'qupfw_b' FAILED (remote: 'Flashing is not allowed for Critical Partitions
')
fastboot: error: Command failed
×  root@sparkle  >  fastboot flash storsec_a storsec.img  🗁 /home/andy3153/…/10.3.6-OnePlus6Oxygen_22.J.48_OTA_048_all_2010042239_c0c1fee2ee-FASTBOOT/images  🗏 281
Sending 'storsec_a' (24 KB) OKAY [ 0.006s]
Writing 'storsec_a' FAILED (remote: 'Flashing is not allowed for Critical Partitions
')
fastboot: error: Command failed
×  root@sparkle  >  fastboot flash storsec_b storsec.img  🗁 /home/andy3153/…/10.3.6-OnePlus6Oxygen_22.J.48_OTA_048_all_2010042239_c0c1fee2ee-FASTBOOT/images  🗏 282
Sending 'storsec_b' (24 KB) OKAY [ 0.008s]
Writing 'storsec_b' FAILED (remote: 'Flashing is not allowed for Critical Partitions
')
fastboot: error: Command failed
×  root@sparkle  >  fastboot flash system_a system.img  🗁 /home/andy3153/…/10.3.6-OnePlus6Oxygen_22.J.48_OTA_048_all_2010042239_c0c1fee2ee-FASTBOOT/images  🗏 283
Invalid sparse file format at header magic
Sending sparse 'system_a' 1/4 (770772 KB) fastboot flash system_b system.img
OKAY [ 20.324s]
Writing 'system_a' OKAY [ 0.001s]
Sending sparse 'system_a' 2/4 (786425 KB) OKAY [ 24.439s]
Writing 'system_a' OKAY [ 0.001s]
Sending sparse 'system_a' 3/4 (774919 KB) OKAY [ 24.149s]
Writing 'system_a' OKAY [ 0.001s]
Sending sparse 'system_a' 4/4 (430045 KB) OKAY [ 15.179s]
Writing 'system_a' OKAY [ 0.001s]
Finished. Total time: 84.655s
√  root@sparkle  >  fastboot flash system_b system.img  🗁 /home/andy3153/…/10.3.6-OnePlus6Oxygen_22.J.48_OTA_048_all_2010042239_c0c1fee2ee-FASTBOOT/images  🗏 284
Invalid sparse file format at header magic
Sending sparse 'system_b' 1/4 (770772 KB) OKAY [ 20.107s]
Writing 'system_b' OKAY [ 0.001s]
Sending sparse 'system_b' 2/4 (786425 KB) OKAY [ 24.519s]
Writing 'system_b' OKAY [ 0.001s]
Sending sparse 'system_b' 3/4 (774919 KB) OKAY [ 23.859s]
Writing 'system_b' OKAY [ 0.001s]
Sending sparse 'system_b' 4/4 (430045 KB) OKAY [ 14.859s]
Writing 'system_b' OKAY [ 0.001s]
Finished. Total time: 94.285s
√  root@sparkle  >  fastboot flash vbmeta_a vbmeta.img  🗁 /home/andy3153/…/10.3.6-OnePlus6Oxygen_22.J.48_OTA_048_all_2010042239_c0c1fee2ee-FASTBOOT/images  🗏 285
Sending 'vbmeta_a' (8 KB) OKAY [ 0.001s]
Writing 'vbmeta_a' OKAY [ 0.001s]
Finished. Total time: 0.009s
√  root@sparkle  >  fastboot flash vbmeta_b vbmeta.img  🗁 /home/andy3153/…/10.3.6-OnePlus6Oxygen_22.J.48_OTA_048_all_2010042239_c0c1fee2ee-FASTBOOT/images  🗏 286
Sending 'vbmeta_b' (8 KB) OKAY [ 0.001s]
Writing 'vbmeta_b' OKAY [ 0.001s]
Finished. Total time: 0.009s
√  root@sparkle  >  fastboot flash vendor_a vendor.img  🗁 /home/andy3153/…/10.3.6-OnePlus6Oxygen_22.J.48_OTA_048_all_2010042239_c0c1fee2ee-FASTBOOT/images  🗏 287
Invalid sparse file format at header magic
Sending sparse 'vendor_a' 1/2 (757755 KB) OKAY [ 19.565s]
Writing 'vendor_a' OKAY [ 0.001s]
Sending sparse 'vendor_a' 2/2 (115028 KB) OKAY [ 7.629s]
Writing 'vendor_a' OKAY [ 0.001s]
Finished. Total time: 27.404s
√  root@sparkle  >  fastboot flash vendor_b vendor.img  🗁 /home/andy3153/…/10.3.6-OnePlus6Oxygen_22.J.48_OTA_048_all_2010042239_c0c1fee2ee-FASTBOOT/images  🗏 288
Invalid sparse file format at header magic
Sending sparse 'vendor_b' 1/2 (757755 KB) OKAY [ 19.506s]
Writing 'vendor_b' OKAY [ 0.001s]
Sending sparse 'vendor_b' 2/2 (115028 KB) OKAY [ 8.059s]
Writing 'vendor_b' OKAY [ 0.001s]
Finished. Total time: 27.750s

So, yeah, how do I solve this? How do I get the partitions to not be 'critical partitions'? I've tried this:

√  root@sparkle  >  fastboot flashing unlock  🗁 /home/andy3153/…/10.3.6-OnePlus6Oxygen_22.J.48_OTA_048_all_2010042239_c0c1fee2ee-FASTBOOT/images  🗏 294
FAILED (remote: ' Device already : unlocked!')
fastboot: error: Command failed
×  root@sparkle  >  fastboot flashing unlock_critical  🗁 /home/andy3153/…/10.3.6-OnePlus6Oxygen_22.J.48_OTA_048_all_2010042239_c0c1fee2ee-FASTBOOT/images  🗏 295
FAILED (remote: ' Device already : unlocked!')
fastboot: error: Command failed

but it is already unlocked apparently