Insane stupid bug causing failure to update system

My wife's iPhone 11 Pro Max 512GB run out of space and she was trying to cut images/videos to a PC. The system became sluggish and the copy process was not successful. She tried to delete some photos but she can't see those deleted photos in the "Recently Deleted" folder. She deleted some Apps as well but no luck.

She decided to reboot the system then the reboot stuck at / infinitely reboot to the Apple logo.

We did a lot of research and found that lots of users are facing the same stupid issue.

When updating the iPhone using iTunes, the process failed at

[23:01:41.0129] ASR RESTORE PROGRESS: 96%
[23:01:41.0129] ramrod_display_set_granular_progress_forced: 32.000000
[23:01:41.0129] ASR STATUS: fail
[23:01:41.0129] ASR: Could not restore - No space left on device
[23:01:41.0129] ASR STATUS: fail
[23:01:41.0129] restore_apfs_image : failed to restore an APFS image, error = 14
[23:01:41.0129] [06:01:37.0450-GMT]{3>6} CHECKPOINT FAILURE:(FAILURE:14) (null):[0x065B] asr_and_invert_image [0]D(failed to restore APFS image)

As a software engineer I think this is an insanely stupid bug. How can the OS try to update itself without checking if there is enough space? How can it force us to restore and lose all the data just because the system bug?

I've seen people blaming the phone owner that it is the owner's responsibility to backup the data. That's true and I've told my wife doing so several times. She tried but still no luck.

If there is an external disk product having a similar bug -- you'll lost all your data if your disk is full, no body will buy this product!

My wife and I have been loyal iPhone users and our old iPhones have been very robust. This iOS 13.xx and iPhone 11 became a nightmare for us.

I urge some OS developer in the Apple inc to investigate this issue. I can't thank you enough!

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We believe the iPhone was using iOS 13.5.1 and the current updatable iOS version is 13.6.1.

I think there must be a way, for example, providing a mini os with less space requirement to boot up the device.

I've heard that some users update and update the system over and over again using iTunes for hundreds of times then the phone magically successfully booted.

Users with the same issue:

• https://github.com/libimobiledevice/idevicerestore/issues/332
• https://github.com/libimobiledevice/idevicerestore/issues/262
• https://discussions.apple.com/thread/251069141
• https://www.douban.com/note/680670021/ (hundreds of users having the same issue formed a wechat group!!!)