Short answer: With standard, generic commands alone, the REDMAGIC Astra Tab (NP05J) cannot be unlocked. Methods that worked on older REDMAGIC devices (for example, using an engineering ABL) are not sufficient for Astra/RedMagic 10 Pro & RedMagic 10s Pro — the device’s secure‑boot architecture and configuration partitions block those approaches.
This article explains why generic bootloader‑unlock methods fail on the Astra NP05J, how it differs from older REDMAGIC models, and what technical prerequisites would be required to achieve an unlock. It also clarifies practical limitations and risk considerations for individual users. For readers who need a quick decision: do not attempt DIY unlocking on Astra unless you have experienced, trusted technical support.
What is an engineering ABL (eng ABL)?
An engineering ABL is an engineering/debug build of the ABL (Android Bootloader Loader). On some earlier REDMAGIC devices, obtaining and flashing an eng ABL allowed developers to enter an engineering environment that made bootloader unlock or further modifications possible. That technique relied on the device trusting the flashed ABL within the existing signature/verification chain.
Why the Astra (NP05J) behaves differently
Community research and developer reports indicate Astra includes additional verification tied to a configuration partition (commonly referenced as ztecfg in developer discussions) and an extended signature chain. In practice:
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Loading only an eng ABL is not enough because later stages of the boot verification chain validate additional configuration and signature entries. If those don’t match, the ABL is rejected and the bootloader remains locked.
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The
ztecfgpartition appears to contain configuration entries and signature metadata that the boot chain uses to validate which bootloader builds are authorized. Modifying or aligningztecfgis therefore necessary for the eng ABL approach to succeed on Astra.
These constraints mean the older “flash eng ABL + generic fastboot commands” workflow that sometimes worked on previous REDMAGIC models does not apply to Astra.
High‑level technical requirements for a successful unlock
Technically, a valid approach would require all of the following (high level):
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A correctly built eng ABL matched to device firmware — here you can download for free but its not enough for unlock
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A properly configured
ztecfgpartition so that the device’s signature chain and configuration entries validate the new bootloader. emmc id also require to configure this -
Access to signing keys or an alternate trusted signing workflow — at the movement i don’t know how they are generating the ztecfg, it may be a cryptographic combination of emmc id, serial number & udid
- Once you have all the above data, flash engineering abl along with device specific ztecfg partition and unlock in fastboot with generic command
fastboot flashing unlock
Current Status: With the help of some chines developers we are able to unlock the bootloader on NP05J, however each device has different unlock key so it is not possible to reuse the same cfg on another device. so if you really want to unlock the bootloader on your device, you have to Contact our support team with the proof of purchase.. (not free)
