fastboot: error: Couldn't parse partition size '0x'. FP3

• /e/ version: IMG-e-0.9-p-2020072865179-dev-FP3.zip
• Device model: FP3
• When it started to occur: -
• Reproducible with the last /e/ version: -
• Reproducible with LineageOS: -

Summary

Some users experience problems installing /e/ on FP3.

• The device is unusable
• The bug is the source of a data loss or a big waste of time
• The bug concerns a third party app
• The bug concerns security
• The bug concerns privacy

The problem

3rd of August 2 users in the telegram support group encountered this problem while following the FP3 flashing doc: fastboot: error: Couldn't parse partition size '0x'. FP3 while issuing this command: fastboot flash boot boot.img

platform-tools_r30.0.4-windows was used i n a first attempt, in a later attempt the fastboot executable included in the stock fairphone OS was used: FP3-REL-2.A.0134-20200703.120010-user-fastbootimage (2).7z (1.06 GB). Both gave the same error.

reproduce the problem Install FP3-REL-2.A.0134-20200703.120010-user-fastbootimage then install /e/. I did not encounter the problem myself, but it's strange 2 users encountered this issue.

What is the current behavior?

fastboot can't flash boot.img

What is the expected correct behavior?

fastboot can install boot.img

Technical informations

Solutions

Workaround

use command fastboot flash boot_a boot.img

Possible fixes

use command fastboot flash boot_a boot.img

concern

Will OTA work with the above workaround? Why does this happen?