#Phi for re-used calculators

1 messages · Page 1 of 1 (latest)

devout otter
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Hello, the numworks calculator recently caught my eye, especially the phi jailbreak. Ive been wanting to get a re-used model for myself to use phi on it, however id like to have some precise information on wether i need a specific model to run phi or if it can run on any up to date numworks calculators, thank you in advance.

midnight sand
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You need a N0110 to use custom firmwares (or N0100, but with less capacities). To be able to jailbreak your calculator, you need a calculator with version 18.2.3 or less. If you have a Raspberry PI or Pico, any N0110 will work (even with the latest version)

devout otter
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oh i do own a raspberry pi

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Is it complicated to find a N0110?

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Well I found one so never mind...

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But how does the RP have to do with any of this

midnight sand
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In fact, you have to use the debug port to wipe the internal flash, which contain a bootloader that prevent you from booting any other firmwares

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Phi use a software hack to wipe the bootloader

devout otter
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That sounds very complicated and risky

midnight sand
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Once the custom bootloader from NumWorks is wiped, the STM32 chip can jump to the "classic" bootloader, in DFU mode

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Then, any bootloader can be flashed with an USB port

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In fact, it is very complicated to brick the calculator, since the debug port will be still here

devout otter
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may I ask what you mean by bricking.

midnight sand
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Bricking mean the calculator is stuck in an unbootable state

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But, unless writing explicitly a specific bit in one register (which disable the debug), it is impossible

devout otter
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For someone with close to 0 rp knowledge its very possible feelsbadman

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Anyways and if I do own a n0110 18.2.3

midnight sand
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If you have 18.2.3 or less, you can downgrade using the software way, so no problem

devout otter
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I doubt that people specificly sell 18.2.3 numworks calculators but ill see.

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As for the rp method, I intend to use a graph calculator for school, I can't take risks and have my parents obliterate me

midnight sand
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For the Raspberry, you just have to put 2 wires on the calculator the time to wipe the flash, and the Raspberry can be unplugged

devout otter
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Very tempting,

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If I do it ill have to buy a cheap numworks and ill have to get my parents to comply. lmao

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thanks for the info

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Also what did the post mean by rasperry pico

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is that a specific model.

midnight sand
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Yes

devout otter
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oh shit.

midnight sand
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Which cost only 4 dollars

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But a classic Raspberry work too

devout otter
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oh phew

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Alright ill see if I buy a numworks and get phi

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thanks alot

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And good day to you.

midnight sand
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You too

devout otter
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@midnight sand

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one more thing

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you mentioned ONLY N0110 right?

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because ive been seing N0100 and N0120

midnight sand
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The N0100 is compatible, but without a lot of features (like CAS), because of the lack of flash storage

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The N0120 can be cracked (but it requires soldering), and no open driver exists, so it is impossible to use it for now

devout otter
devout otter
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but wait

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if u cant even get cas

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is it even worth it

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what programs are worth installing