[OnePlus 7T Guides, News, & Discussion] comrade_aeolist:
I tried this and still get exactly the same errors, "not allowed for critical partitions" on some and "partition not found" for system/vendor/product.

e. Here's my output, obviously it's very different from what you got:

Do you want to wipe all the data ( Reccomended )[Y/N]?y

Erasing 'userdata' OKAY [ 0.502s]

mke2fs 1.44.4 (18-Aug-2018)

Creating filesystem with 25477509 4k blocks and 6373376 inodes

Filesystem UUID: ed2461e8-d83e-11ea-97f4-f5d750ee2b16

Superblock backups stored on blocks:

32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208,

4096000, 7962624, 11239424, 20480000, 23887872

Allocating group tables: done

Writing inode tables: done

Creating journal (131072 blocks): done

Writing superblocks and filesystem accounting information: done

Sending 'userdata' (4616 KB) OKAY [ 0.116s]

Writing 'userdata' OKAY [ 0.003s]

Erasing 'metadata' OKAY [ 0.007s]

Erase successful, but not automatically formatting.

File system type raw not supported.

Finished. Total time: 1.036s

Sending 'boot_a' (98304 KB) OKAY [ 2.284s]

Writing 'boot_a' OKAY [ 0.349s]

Finished. Total time: 2.771s

Sending 'dtbo' (16384 KB) OKAY [ 0.378s]

Writing 'dtbo' OKAY [ 0.065s]

Finished. Total time: 0.518s

Sending 'modem_a' (165396 KB) OKAY [ 3.836s]

Writing 'modem_a' OKAY [ 0.827s]

Finished. Total time: 4.885s

Sending 'reserve' (250136 KB) OKAY [ 5.730s]

Writing 'reserve' FAILED (remote: '(reserve_a) No such partition')

fastboot: error: Command failed

Sending 'recovery' (98304 KB) OKAY [ 2.245s]

Writing 'recovery' OKAY [ 0.399s]

Finished. Total time: 2.786s

Sending 'vbmeta' (8 KB) OKAY [ 0.006s]

Writing 'vbmeta' OKAY [ 0.003s]

Finished. Total time: 0.037s

Sending 'vbmeta_system' (4 KB) OKAY [ 0.006s]

Writing 'vbmeta_system' OKAY [ 0.002s]

Finished. Total time: 0.030s

Rebooting into fastboot OKAY [ 0.004s]

< waiting for any device >

Finished. Total time: 8.448s

Sending 'abl_a' (1164 KB) OKAY [ 0.028s]

Writing 'abl_a' OKAY [ 0.031s]

Finished. Total time: 0.072s

Sending 'aop_a' (200 KB) OKAY [ 0.005s]

Writing 'aop_a' OKAY [ 0.007s]

Finished. Total time: 0.020s

Sending 'bluetooth_a' (828 KB) OKAY [ 0.019s]

Writing 'bluetooth_a' OKAY [ 0.010s]

Finished. Total time: 0.039s

Sending 'cmnlib_a' (384 KB) OKAY [ 0.009s]

Writing 'cmnlib_a' OKAY [ 0.008s]

Finished. Total time: 0.027s

Sending 'cmnlib64_a' (500 KB) OKAY [ 0.012s]

Writing 'cmnlib64_a' OKAY [ 0.008s]

Finished. Total time: 0.030s

Sending 'devcfg_a' (52 KB) OKAY [ 0.002s]

Writing 'devcfg_a' OKAY [ 0.005s]

Finished. Total time: 0.015s

Sending 'dsp_a' (65536 KB) OKAY [ 1.598s]

Writing 'dsp_a' OKAY [ 0.363s]

Finished. Total time: 2.038s

Sending 'hyp_a' (480 KB) OKAY [ 0.011s]

Writing 'hyp_a' OKAY [ 0.007s]

Finished. Total time: 0.029s

Sending 'imagefv_a' (20 KB) OKAY [ 0.001s]

Writing 'imagefv_a' OKAY [ 0.005s]

Finished. Total time: 0.013s

Sending 'keymaster_a' (248 KB) OKAY [ 0.006s]

Writing 'keymaster_a' OKAY [ 0.007s]

Finished. Total time: 0.023s

Sending 'LOGO_a' (6540 KB) OKAY [ 0.157s]

Writing 'LOGO_a' OKAY [ 0.045s]

Finished. Total time: 0.225s

Sending 'multiimgoem_a' (16 KB) OKAY [ 0.001s]

Writing 'multiimgoem_a' OKAY [ 0.005s]

Finished. Total time: 0.026s

Resizing 'odm_a' OKAY [ 0.005s]

Sending 'odm_a' (912 KB) OKAY [ 0.021s]

Writing 'odm_a' OKAY [ 0.283s]

Finished. Total time: 0.334s

Sending 'oem_stanvbk' (2480 KB) OKAY [ 0.060s]

Writing 'oem_stanvbk' OKAY [ 0.022s]

Finished. Total time: 0.113s

Invalid sparse file format at header magic

Sending sparse 'opproduct_a' 1/1 (391796 KB) FAILED (Write to device failed (Invalid argument))

fastboot: error: Command failed

< waiting for any device >

Sending 'qupfw' (72 KB) OKAY [ 0.010s]

Writing 'qupfw' OKAY [ 0.003s]

Finished. Total time: 0.041s

Sending 'storsec' (24 KB) OKAY [ 0.010s]

Writing 'storsec' OKAY [ 0.003s]

Finished. Total time: 0.034s

Sending 'tz' (3092 KB) OKAY [ 0.074s]

Writing 'tz' FAILED (remote: 'Flashing is not allowed for Critical Partitions

')

fastboot: error: Command failed

Sending 'uefisecapp' (124 KB) OKAY [ 0.008s]

Writing 'uefisecapp' OKAY [ 0.003s]

Finished. Total time: 0.039s

Sending 'xbl' (3120 KB) OKAY [ 0.081s]

Writing 'xbl' FAILED (remote: 'Flashing is not allowed for Critical Partitions

')

fastboot: error: Command failed

Sending 'xbl_config' (124 KB) OKAY [ 0.013s]

Writing 'xbl_config' FAILED (remote: 'Flashing is not allowed for Critical Partitions

')

fastboot: error: Command failed

Invalid sparse file format at header magic

Sending sparse 'system' 1/3 (784696 KB) OKAY [ 17.922s]

Writing 'system' FAILED (remote: 'Partition not found')

fastboot: error: Command failed

Invalid sparse file format at header magic

Sending sparse 'vendor' 1/2 (785569 KB) OKAY [ 17.948s]

Writing 'vendor' FAILED (remote: 'Partition not found')

fastboot: error: Command failed

Invalid sparse file format at header magic

Sending sparse 'product' 1/2 (785440 KB) OKAY [ 17.903s]

Writing 'product' FAILED (remote: 'Partition not found')

fastboot: error: Command failed

Press any key to continue . . .