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Android Application Downgrade

I'm using BakaReader EX (com.erakk.lnreader) as an example.

Instructions

1. Download desired version of your application, e.g.: https://github.com/calvinaquino/LNReader-Android/releases/download/1.1.34/BakaReader-EX-1.1.34.apk

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# [Arch] List provisions with packages providing them

# pacman-based solution
pacman -Si \
	| awk '/^$/{n=""}/^Name/{n=$3}/^Provides/{if($3!="None"){for(i=3;i<=NF;i++){if(t[$i]=="")t[$i]="";t[$i]=t[$i]" "n}}}END{for(p in t)printf("%44-s :%s\n",p,t[p])}' \
	| sort | less

# expac-based solution (better)
expac -S "%n %P" \
	| awk 'NF>1{for(i=2;i<=NF;i++){if(t[$i]=="")t[$i]="";t[$i]=t[$i]" "$1}}END{for(p in t)printf("%44-s :%s\n",p,t[p])}' \

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#!/bin/sh
# SPDX-License-Identifier: MIT

## Copyright (C) 2013 Przemyslaw Pawelczyk <[email protected]>
##
## This script is licensed under the terms of the MIT license.
## https://opensource.org/licenses/MIT
#
# Simple script for downloading program stored on CNET:
# - AOMEI Partition Assistant Standard

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#!/bin/sh
# SPDX-License-Identifier: MIT

## Copyright (C) 2013 Przemyslaw Pawelczyk <[email protected]>
##
## This script is licensed under the terms of the MIT license.
## https://opensource.org/licenses/MIT

_calcswsa()
{

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From 5d920ec604a896cfd8419f9360f3a81adedd19eb Mon Sep 17 00:00:00 2001
From: Przemyslaw Pawelczyk <[email protected]>
Date: Sat, 30 Jan 2010 20:57:06 +0100
Subject: [PATCH] BadRAM for v2.6.32.x

Attempt to adapt BadRAM patches to recent kernel versions. Includes
improvements and fixes(?). Were previous versions working on x86_64?
I am kernel newbie so all my below thoughts might be severly wrong.

I am not sure about correctness of x86_32 path involving highmem. It is

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diff -ru memtest86+-4.00/error.c memtest86+-4.00x/error.c
--- memtest86+-4.00/error.c	2009-09-22 02:35:46.000000000 +0200
+++ memtest86+-4.00x/error.c	2010-01-30 16:15:11.000000000 +0100
@@ -256,8 +256,8 @@
 			clear_scroll();
 			v->erri.hdr_flag++;
 		}
-		/* Do not do badram patterns from test 0 or 5 */
-		if (v->test == 0 || v->test == 5) {
+		/* Do not do badram patterns from test 0 */

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From 4e7de246fa2db00112abca27c58922f2003af4c5 Mon Sep 17 00:00:00 2001
From: Przemyslaw Pawelczyk <[email protected]>
Date: Tue, 11 Sep 2012 23:40:07 +0200
Subject: [PATCH] Fix lowercase sample paths in *.sfz.

---
 Brass - Bass Trombone Solo.sfz     |   28 ++++-----
 Brass - Horn Solo.sfz              |   26 ++++----
 Brass - Tenor Trombone Solo.sfz    |   22 +++----
 Brass - Trumpet Solo.sfz           |   26 ++++----

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From: Przemyslaw Pawelczyk <[email protected]>
Date: Sun, 8 May 2011 23:16:55 +0200
Subject: [PATCH] Fix CPUID availability test for x86_64.

Before you got following gcc/clang error in x86_64:

    cputest.c: Assembler messages:
    cputest.c:38: Error: suffix or operands invalid for `pop'
    cputest.c:41: Error: suffix or operands invalid for `push'
    cputest.c:44: Error: suffix or operands invalid for `pop'

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// SPDX-License-Identifier: MIT

// Copyright (C) 2011 Przemyslaw Pawelczyk <[email protected]>
//
// This script is licensed under the terms of the MIT license.
// https://opensource.org/licenses/MIT

bool useAlpha = false;
const uchar* pixelData = image.bits();
int bytes = image.byteCount();

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/* SPDX-License-Identifier: MIT */
/*
 * Copyright (C) 2012 Przemyslaw Pawelczyk <[email protected]>
 *
 * This code is licensed under the terms of the MIT license.
 * https://opensource.org/licenses/MIT
 */

#include <errno.h>
#include <fcntl.h>